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Practice case P2-18 · Face-to-face · simulated patient

“I’m worn out all the time, doctor”

A 52-year-old home care worker has booked an appointment because she is tired all the time. She would like some blood tests.

Reviewed and kept current

Station family: History, diagnosis and management · 8-minute station · 1 min 30 s reading · Last editorial review: 20 September 2026.

Candidate instructions

Read this as you would outside the room

You have 1 minute 30 seconds to read, then 8 minutes. Candidates: everything below this section is folded away — leave it closed until you have finished the station.

Information
Your roleFoundation Year 2 doctor in a general practice. Your supervising GP is available.
PatientMrs Angela Campbell, 52, home care worker
Reason for appointmentBooked online: “Tired all the time — would like blood tests.”
RecordsHypertension for four years: amlodipine 10 mg and ramipril 10 mg; last three practice readings between 148/92 and 156/96. Weight 78 kg two years ago. No blood tests for two years. Last period 14 months ago. Non-smoker.

Your task

Take a focused history.
You may ask for examination findings; they will be read out to you.
Tell Mrs Campbell what you think is going on, and agree a management plan with her.
Folded away

For the actor and the examiner

1 · Actor script — role player only

Candidates: do not open until you have consulted.

Persona and manner

  • Angela Campbell, 52, home care worker — you drive between clients’ houses, six or seven visits a day. Married to Trevor; two grown-up children. Warm, stoical, a bit embarrassed to be “wasting an appointment on being tired”.
  • Yawn once or twice. You look weary rather than unwell.

Opening line — say this verbatim

  • “I’m worn out all the time, doctor. I think it must be the change — I just need a tonic or a blood test or something.”

Volunteer freely if given the space

  • Tired for about eight months, and getting worse. You wake up feeling as if you have not been to bed.
  • You have started having a nap in the car between clients most afternoons — twenty minutes — and you fall asleep in front of the television by eight.
  • Your periods stopped just over a year ago; a few hot flushes, not many now.

Only if asked

  • Sleep: in bed by ten, up at six; no night shifts — the same hours for years. You wake two or three times — sometimes with a dry mouth, often to pass water, and once or twice with a jolt, “as if I’d been holding my breath”.
  • Snoring: always a bit; much louder over the last year. Trevor moved into the spare room three months ago. If asked whether anyone has noticed your breathing stop: “Trevor says I go quiet and then snort — he used to nudge me to start me off again.”
  • A dull headache most mornings, gone by ten o’clock. You are getting forgetful — you missed a client’s lunchtime tablets last month, which is not like you.
  • Weight: up about eight kilos in two years since you stopped your exercise class — too tired to go. Collar size up on your uniform.
  • Family: your dad “snored like a train” and had a machine with a mask at night in his sixties; your brother Gary has just been given one.
  • Mood: fed up and irritable with the tiredness, but not low — you still enjoy your grandchildren and your church choir. No loss of interest. Not anxious.
  • No heavy bleeding before your periods stopped; no bleeding since. No feeling cold, no constipation, no change in hair or skin. No thirst. No weight loss, no night sweats, no breathlessness, no chest pain. Bowels normal.
  • Alcohol: a glass of wine at the weekend. No sleeping tablets or sedating medicines. Two coffees a day — and more recently an energy drink at about three o’clock “to get me through”.
  • Driving: about 60 miles a day for work in your own car, on an ordinary car licence. Keep the traffic-lights story back unless you are asked directly whether you have ever felt sleepy or nodded off at the wheel, or had an accident or a near miss — see the ‘anything to add’ line.

Impact on daily life — home and work (only if asked)

  • You dread the afternoon visits; you have started turning down extra shifts, and money is tight.
  • Trevor sleeping in the spare room upsets you both.
  • You have stopped choir practice on Thursdays because you cannot stay awake; you nodded off at your granddaughter’s school play.

Ideas, concerns and expectations

  • Idea: the menopause — or that you are “low on iron”.
  • Concern: that you are getting dementia like your mum — the forgetfulness frightens you. And that you are letting your clients down.
  • Expectation: a blood test and a tonic; perhaps HRT.

Cues to deliver, timed

  • Minute 2: “Trevor’s in the spare room now — says I sound like a tractor.” (Said with a laugh; if the doctor does not pick it up, do not repeat it.)
  • Minute 4, if sleepiness when driving has not been asked about: “The afternoons are the worst — I have to pull over for a nap between clients.”

If the doctor summarises and asks whether you want to add anything

  • If the traffic-lights story has not come out — whether or not driving has been mentioned: “There is one thing — last week I think I nodded off at the traffic lights. The van behind beeped and woke me up. I haven’t told anyone — I can’t do my job without the car.”
  • If it has: “Could it be dementia? Mum started by forgetting things.”

How to respond to the doctor

  • If the doctor explains that your breathing is probably being interrupted many times a night, that this explains the tiredness, the headaches and the forgetfulness, and that it is treatable: relieved — “So it’s not my mind going?”
  • If told not to drive: upset — “Who’s going to get my ladies up in the morning? Six people depend on me.”
  • If the doctor acknowledges that, explains that it applies until the sleepiness is under control, asks the sleep clinic to see you quickly because you drive for work, and offers a fit note or a letter to your employer: you agree — reluctantly — to stop driving until you have been seen and treated.
  • If the doctor is vague (“be careful driving”, “take breaks”): you carry on driving.
  • If the doctor orders blood tests and says nothing else: you thank them and leave none the wiser.
  • If offered HRT, a tonic or antidepressants for the tiredness: you accept.

Do not

  • Volunteer the snoring detail, the pauses in breathing, your father’s mask machine or the traffic lights unless asked — or invited to add anything (apart from the timed cues).
  • Use the words “sleep apnoea”.

Findings to give the candidate — only if asked for

If the candidate asks to examine you, or asks for observations or examination findings, read these out. Do not offer them otherwise. (Where a separate examiner is present, the examiner reads them.)

Examination: looks tired but well. Weight 86 kg, height 1.66 m — BMI 31; neck circumference 42 cm. BP 152/94, pulse 78 regular, SpO₂ 97% on air. Throat: crowded, with a low soft palate; tonsils not enlarged; small lower jaw. No pallor, no goitre, no ankle swelling; chest clear. Epworth Sleepiness Scale, if the candidate asks for it or goes through it with her: 16 out of 24.

2 · Examiner mark sheet — generic scheme plus the key facts for this case

Domain marks — with the key facts that earn a 4 at this station

Domain (GMC wording) · key facts for this case1234Score
1 · Data gathering, technical and assessment skills
  • Tiredness characterised — eight months; sleepiness (naps, dozing at the television) rather than low mood or weakness; unrefreshing sleep
  • Sleep history: loud snoring, witnessed pauses, waking with a jolt, nocturia, morning headache, poor concentration; weight up 8 kg; father and brother on CPAP; Epworth score asked for (16)
  • Asks about driving — 60 miles a day for work; nodded off at traffic lights. Red flags and the other causes: mood, bleeding, thyroid, diabetes, weight loss, alcohol and sedatives
  • ICE (menopause or iron; fears dementia like her mother; wants a tonic) and impact — work, her marriage, choir
/4
2 · Clinical management skills
  • Summary and check, then the working diagnosis: probable obstructive sleep apnoea — sleepiness, snoring, witnessed apnoeas, BMI 31, neck 42 cm, poorly controlled blood pressure, family history
  • Why not: depression, anaemia, hypothyroidism, diabetes, menopause alone — bloods (FBC, ferritin, TSH, HbA1c, renal and liver) to check, not to delay the referral
  • Must not drive until the sleepiness is controlled — DVLA rule explained, fit note or employer letter offered; sleep-service referral flagged for rapid assessment because she drives for work
  • Safety-net: no driving until the sleepiness is controlled; chest pain, palpitations or breathlessness → same-day advice (999 if severe); low mood or bleeding after the menopause → book promptly · Follow-up: bloods and blood pressure in 1–2 weeks; referral chased; she tells the DVLA if not controlled by 3 months
/4
3 · Interpersonal skills
  • Takes “just tired” seriously; does not dismiss her as menopausal
  • Picks up the spare-room cue lightly and without embarrassment
  • Treats the driving advice as a shared problem — her clients, her rota, her employer — and not as a rule read out
  • Addresses the dementia fear directly; teach-back of the plan
/4
Station total/12

Examiner's overall judgement (standard-setting only — it does not decide your result): ☐ Unsatisfactory   ☐ Borderline   ☐ Satisfactory   ☐ Good

Marks are 1 to 4 in each domain; the generic descriptor for each mark is on the mark scheme page, and the structure of the eight minutes is on the 8-minute station page. The full standard for this case is in section 3 and the GMC feedback statements, with examples from this case, are in section 4. The examination findings that the role player gives — only if the candidate asks for them — are at the end of section 1.

3 · Expanded station-specific marking standard — what earns 4, 3, 2 and 1 here

The top row is the full picture of what a competent F2 could do at this station, including the working diagnosis with its justified differentials, the safety-net and the follow-up; lower rows describe how performance falls away. It is a debriefing aid, not a checklist to recite: nobody says every line in eight minutes, and a 4 is a judgement that the essentials — the italic key facts on the mark sheet — were done well, in plain language and at the patient’s pace. Acumen training standard — the GMC does not publish station mark sheets.

MarkDomain 1 · Data gathering, technical and assessment skillsDomain 2 · Clinical management skillsDomain 3 · Interpersonal skills
4
  • Open start; establishes what she means by “tired” — sleepiness and unrefreshing sleep rather than weakness, breathlessness or low mood; duration and trend
  • Sleep history: hours in bed, waking, snoring, witnessed apnoeas, choking or waking with a jolt, nocturia, dry mouth, morning headache, concentration and memory; asks what her husband has noticed
  • Quantifies sleepiness — asks for or goes through the Epworth Sleepiness Scale — and asks specifically about driving and sleepiness at the wheel, and what her job involves
  • Risk factors: weight gain and collar size, alcohol and sedatives, family history, menopause, poorly controlled blood pressure
  • Screens the differentials: mood (two questions) and anxiety; heavy or post-menopausal bleeding; thyroid symptoms; thirst and polyuria; caffeine; shift pattern
  • Red flags: weight loss, night sweats, breathlessness, chest pain, bleeding; asks for examination findings — BMI, neck circumference, blood pressure, throat
  • ICE: thinks it is the menopause or low iron; fears dementia like her mother; expects a tonic or a blood test
  • Impact on daily living: naps between clients, turning down shifts, her husband in the spare room, choir and her grandchildren
  • Summarises and checks whether Mrs Campbell wants to add anything — which is when the traffic lights come out, if they have not already
  • Working diagnosis with justified differentials: probable obstructive sleep apnoea — excessive sleepiness, loud snoring, witnessed apnoeas, waking with a jolt, nocturia, morning headaches, BMI 31, neck 42 cm, blood pressure not controlled on two drugs, first-degree relatives on CPAP, Epworth 16. Depression unlikely (enjoyment intact); anaemia, hypothyroidism and diabetes to be excluded with bloods; the menopause can worsen sleep and makes sleep apnoea more likely, but does not explain the picture by itself; dementia is very unlikely to be the explanation for poor concentration in someone this sleepy — memory usually improves once sleep is treated; review if it does not
  • Driving: she must not drive at all until the sleepiness is controlled — not only when she feels drowsy; it is her legal responsibility, and the doctor’s duty is to tell her so clearly. She may drive again once it is controlled; she must tell the DVLA if it is not controlled within three months, or if moderate or severe sleep apnoea with sleepiness is confirmed. Explains — as information, not as a threat — that a doctor may have to inform the DVLA if a patient carries on driving when unfit. Records the advice. (An F2 who says they will confirm the exact DVLA rule with the supervising GP loses nothing.)
  • Refers to the sleep service for a sleep study, asking for rapid assessment because driving is essential to her job; includes the Epworth score, BMI, blood pressure, comorbidities, her occupation and the driving history
  • Bloods: FBC, ferritin, ESR or CRP, renal and liver function, TSH, HbA1c and coeliac serology — without waiting for them before referring. Her own agenda answered: a tonic will not help and HRT does not treat this sleepiness — menopausal symptoms can be revisited at the review
  • Explains treatment in plain words: the throat narrows in sleep; a CPAP machine holds it open with gentle air pressure and many people feel different within days to weeks; avoid alcohol and sedatives in the evening
  • For the review visit — credit if mentioned, not required for a 4: home blood pressure readings and a third drug if still raised (sleep apnoea may be part of why it is hard to control); cardiovascular risk and lipids; weight-management referral; sleeping on her side
  • Practical help: fit note for amended duties or a letter to her employer; caffeine is not a substitute for not driving; tells the supervising GP
  • Safety-net: no driving at all until the sleepiness has been treated and is under control — feeling alert on the day does not count, and coffee, energy drinks and an open window do not make it safe; if you have driven and felt drowsy, tell us the same day; chest pain, palpitations or breathlessness → same-day advice, or 999 if severe; low mood taking hold, or any bleeding now that your periods have stopped → book promptly; no word from the sleep clinic within two weeks → ring us and we will chase it.
  • Follow-up: appointment in one to two weeks with the F2 or her usual GP for the blood results and a blood-pressure review (home readings in the meantime); the practice chases the sleep-service referral, marked for rapid assessment; the driving advice and her agreement recorded in the notes; she tells the DVLA if the sleepiness is not under control within three months, or if moderate or severe sleep apnoea with sleepiness is confirmed; fit note or employer letter as agreed.
  • Validates the tiredness — “this is not you being lazy, and it is not just the change”
  • Responds to the spare-room remark with light curiosity, which opens the snoring history
  • Delivers the driving advice as a shared problem: honest, specific, acknowledges the cost, moves straight to what can be done
  • Addresses the dementia fear by name and explains why sleepiness affects memory
  • Plain language — “your throat relaxes and narrows when you are asleep, so your breathing keeps stopping and your brain keeps waking you up”
  • Teach-back of the three things: no driving until this is treated, bloods and review, the sleep clinic
3Sleep history and driving covered and the differentials screened; one of the Epworth score, family history, examination findings or the impact missing.Correct working diagnosis, clear driving advice and a sleep-service referral; one of the request for rapid assessment, bloods, lifestyle measures or blood-pressure review missing.Warm and clear; driving advice given a little bluntly, or one cue missed.
2A general “tired all the time” history — mood, thyroid and anaemia screened — but snoring and breathing pauses not asked about, or driving never mentioned.Mentions sleep apnoea as a possibility but waits for blood tests before referring; or driving advice vague (“be careful”, “take breaks”); follow-up open-ended.Pleasant but formulaic; the spare-room cue missed; the driving advice read out as a rule with no acknowledgement of her job.
1Tiredness accepted at face value; a few closed questions and a blood form. Or unsafe: no meaningful history: “tired all the time” is accepted as the diagnosis and nothing is asked about sleep, mood, bleeding or driving.Bloods only, or treats as menopause or depression; no mention of driving; no safety-net. Or unsafe: knows she has fallen asleep at the wheel and gives no driving advice — or tells her she may carry on driving with coffee and the window open; or prescribes a hypnotic.Dismissive (“it’s your age”) or alarming; she leaves feeling told off or unheard. Or unsafe: opens with a threat to report her to the DVLA (calmly explaining that disclosure can become necessary is expected, not penalised); or mocks the snoring.
4 · GMC feedback statements — where underperformance was identified — with case-specific examples

A feedback statement marks where underperformance was identified in the consultation. With PLAB 2 results the GMC may attach any combination of the ten statements to a station — none, one or several. The right-hand column shows what each one looks like at this station. Record the statements that applied in the practice log.

GMC feedback statementUnderperformance it signals (generic)Case-specific examples
1 · ConsultationDisorganised or unstructured consultationRuns through a “tired all the time” checklist in no order; the sleep history arrives late or not at all; no summary before the explanation.
2 · IssuesKey issues or priorities not recognisedAccepts the patient’s agenda — “menopause, wants bloods” — and does not recognise that the tasks are to find the cause of pathological sleepiness and to make driving safe.
3 · TimePoor time managementLong menopause and dietary history; the bell goes before driving has been mentioned.
4 · FindingsAbnormal findings or results, or their implications, not identifiedDoes not connect the record — blood pressure uncontrolled on two drugs, 8 kg weight gain — with the history; is told “Epworth 16” and does not know it is abnormal.
5 · ExaminationPhysical examination or use of instruments not competentDoes not ask for BMI, neck circumference, blood pressure or a look at the throat; or asks and ignores the findings.
6 · DiagnosisWorking diagnosis or differential diagnoses not correct“It’s probably the menopause” or “you may be a bit depressed”; sleep apnoea never named; no reasoning given for or against the differentials.
7 · ManagementManagement plan not reflecting current best practiceBlood tests and “come back if they’re normal”; no sleep-service referral; no driving advice, or “try not to drive if you feel tired”; nothing said about chest pain, palpitations or when to call 999; no review date.
8 · RapportRapport and sensitivity to the patient’s feelings and concerns not shownLaughs along with “says I sound like a tractor” and moves on; or delivers the driving advice as a threat; no acknowledgement that her livelihood depends on the car.
9 · ListeningVerbal and non-verbal cues not used; poor active listeningMisses the spare-room cue and the nap-between-clients cue; never invites her to add anything, so the traffic lights are never mentioned.
10 · LanguageLanguage or explanations not understandable; understanding not checked“You may have OSAHS — we’ll arrange respiratory polygraphy and you’ll probably need CPAP; your ESS is 16.”
5 · Examiner points of fact and guidelines

Points of fact the examiner should have to hand

  1. NICE NG202 — assess for obstructive sleep apnoea/hypopnoea syndrome when a person has two or more of: snoring, witnessed apnoeas, unrefreshing sleep, waking headaches, unexplained excessive sleepiness, tiredness or fatigue, nocturia, choking during sleep, sleep fragmentation or insomnia, cognitive dysfunction or memory impairment (rec 1.1.1). It is more common with obesity, treatment-resistant hypertension, type 2 diabetes, atrial fibrillation, hypothyroidism and other conditions (rec 1.1.2).
  2. Women with sleep apnoea are more likely than men to report fatigue, insomnia, morning headache and low mood, and less likely to report snoring or witnessed apnoeas — so they are under-diagnosed; prevalence rises sharply after the menopause (Bonsignore and colleagues, European Respiratory Review 2019; NICE CKS lists post-menopausal women as a risk group).
  3. Use the Epworth Sleepiness Scale in the assessment (0–10 normal; 11–12 mild, 13–15 moderate, 16–24 severe sleepiness), and consider STOP-Bang (hers is 6 of 8 — high risk) — but do not use the Epworth score alone to decide on referral, because not everyone with sleep apnoea is sleepy (NICE NG202 recs 1.1.3–1.1.4).
  4. The referral letter (NICE NG202 rec 1.2.1) should give the assessment scores, how sleepiness affects the person, comorbidities, occupational risk and the oxygen saturation — add the BMI and the driving history. The sleep service prioritises for rapid assessment people with a vocational driving job or a job where vigilance is critical for safety, unstable cardiovascular disease (including treatment-resistant hypertension), pregnancy, pre-operative assessment for major surgery, or non-arteritic anterior ischaemic optic neuropathy (rec 1.2.2). NICE does not define “vocational driving job”, and the DVLA uses “vocational” for Group 2 (lorry and bus) licences — so do not call her a vocational driver: write that she holds an ordinary (Group 1) licence, drives about 60 miles a day between clients, cannot work without driving, and gives medicines to vulnerable adults — a job where vigilance is critical for safety.
  5. DVLA (Assessing fitness to drive, ‘excessive sleepiness’): a person with excessive sleepiness that has, or is likely to have, an adverse effect on driving — including suspected sleep apnoea — must not drive until the symptoms are controlled. They must notify the DVLA if control is not achieved within three months; if moderate or severe sleep apnoea syndrome with sleepiness is confirmed they must not drive and must notify. Relicensing then needs control of the condition, improved sleepiness and adherence to treatment, confirmed medically, with review at least every three years for Group 1 (car) and every year for Group 2 (lorry and bus). Mrs Campbell holds an ordinary car licence, so Group 1 standards apply even though she drives for work. Driving against medical advice may also invalidate motor insurance.
  6. The doctor’s duties (GMC, Confidentiality: patients’ fitness to drive and reporting concerns to the DVLA or DVA): explain that the condition may affect safe driving and that she has a legal duty to tell the DVLA when the rules require it; tell her — as information, not as a threat — that a doctor may be obliged to inform the DVLA if a patient carries on driving when unfit; record the advice. If a patient continues to drive, cannot be persuaded to stop, and others are exposed to a risk of death or serious harm, the doctor contacts the DVLA medical adviser in confidence — trying to tell the patient beforehand, and confirming in writing afterwards. A fit note (“may be fit for work” with amended duties) is the standard route for work; a letter to an employer is private work, so an F2 checks with the supervising GP.
  7. Diagnosis is by a sleep study — usually home respiratory polygraphy (NICE NG202). Severity by apnoea–hypopnoea index: 5 to under 15 mild, 15 to under 30 moderate, 30 or more severe. Treatment: CPAP for moderate and severe disease, and for mild disease when symptoms affect quality of life and daytime activities; a mandibular advancement splint as an alternative for some; weight loss, less alcohol, stopping smoking and sleep hygiene for everyone; positional devices in selected people.
  8. Bloods for prolonged fatigue (NICE CKS; NICE NG20): FBC, ferritin, ESR or CRP, renal and liver function, TSH, HbA1c and coeliac serology (IgA tissue transglutaminase); bone profile, urinalysis and others as the history directs. They run alongside the referral — a normal result does not explain an Epworth score of 16. Other causes of sleepiness to keep in mind: too little sleep, sedating drugs and alcohol, restless legs, depression, hypothyroidism and — rarely — narcolepsy.
  9. Untreated sleep apnoea is associated with hypertension that is hard to control, atrial fibrillation, stroke and road traffic collisions. Treating it improves sleepiness and quality of life, and may help blood pressure a little. Her blood pressure is uncontrolled on two drugs — not yet “resistant”, which NICE NG136 defines as uncontrolled on three; the next step is a third drug after checking adherence and home readings.

Where candidates lose marks at this station

  • Bloods and a follow-up — and no sleep history.
  • “It’s probably the menopause.”
  • Never asking a tired person whether they drive.
  • “Try to take breaks when you’re driving.”
  • Waiting for normal blood results before referring.
  • Missing the husband in the spare room.

Guidelines for this station

6 · MLA content map tags for this case
MLA content mapThis station
Domain 1 · Areas of clinical practiceGeneral practice and primary healthcare · Respiratory
Domain 3 · Clinical and professional capabilitiesHistory, examination and differential diagnosis · Investigations: request, interpret, act · Managing risk · Health promotion and disease prevention · Communication with patients, relatives and carers
Domain 5 · Patient presentationsFatigue · Sleep problems · Snoring · Weight gain · Fitness to drive
Domain 6 · ConditionsObstructive sleep apnoea · Obesity
Station familyHistory, diagnosis and management — History, diagnosis and management
7 · My marks and reflection — practice log form

Record your three domain marks, your station total, the GMC feedback statements that applied (where underperformance was identified), and what you will keep and change. The form is already labelled with this case and its web address; a copy of your entry is emailed to you, so your practice log builds up in your inbox and can be downloaded.

Record my marks and reflection for P2-18

Revision link for this case: acumenprimarycare.com/plab-2-osce/case-18-tired-all-the-time

Independence & scope. Independent, formative training material from MD Acumen Ltd. Not affiliated with, endorsed by, or delivered on behalf of the General Medical Council. The GMC does not publish its station mark sheets: every mark scheme and descriptor on these pages is an Acumen training tool calibrated to the GMC's published marking domains, feedback statements and the MLA content map. Practice scores are not a prediction of examination performance. Clinical content reflects UK guidance at the date of editorial review — always check the current guideline. All patients are fictional.

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