Tired All The Time: Unexplained Fatigue

Clinical Scenario

Priya Sharma, 38, a secondary school teacher, presents requesting blood tests because she has been 'tired all the time' for 3 months. She is convinced she has a thyroid problem because her mother was hypothyroid. She works full-time, has two children under 5, and her husband works away during the week. She sleeps poorly, wakes unrefreshed, and has started relying on energy drinks to get through the school day. She has no weight change, no menstrual irregularity, and no other red flag symptoms. She becomes frustrated if you suggest the tiredness might not be thyroid-related.

What This Case Tests

Systematically screening for organic causes of fatigue while exploring psychosocial contributors; managing a patient with a fixed health belief about thyroid disease; negotiating appropriate investigations without over-investigating; identifying features of burnout, sleep deprivation, and low mood; validating the patient's exhaustion without colluding with an unlikely diagnosis; developing a holistic management plan

Common Mistakes Trainees Make

The three most common mistakes are: simply ordering the thyroid blood tests to keep the patient happy without exploring the psychosocial context — this validates a false belief and misses the real problem; dismissing the patient's request for bloods entirely, which feels invalidating and damages trust — some baseline investigations are reasonable; and failing to recognise that this presentation may represent depression, burnout, or chronic sleep deprivation, all of which require different management than hypothyroidism.

The Consultation Challenge

Priya has come with a clear agenda: she wants thyroid blood tests. Her mother's hypothyroidism has given her a specific health belief, and she'll feel dismissed if you don't engage with it. The skill here is honouring her request while broadening the conversation.

Start by validating her exhaustion — this is not a patient exaggerating. Teaching full-time with two under-fives and an absent partner during the week is genuinely depleting. 'Three months of feeling this tired must be really difficult, especially with everything you're managing at home and work. I want to make sure we get to the bottom of it properly.'

Explore the fatigue systematically. Ask about sleep: how many hours, quality, what wakes her (children? racing thoughts?), does she feel refreshed? Ask about mood: enjoyment, motivation, tearfulness, concentration at work. Ask about diet, exercise, and caffeine intake — the energy drinks are a red flag for a coping pattern. Screen for organic causes: weight change, cold intolerance, menstrual changes, breathlessness, bleeding.

Address the thyroid belief directly and respectfully: 'I can absolutely understand why you'd think of thyroid problems given your mum's history. It's a reasonable thought, and I'm happy to check your thyroid function. But I'd also like to run a broader set of bloods — iron, vitamin D, full blood count — so we're not just looking at one possibility.' This validates her request while embedding it in a more thorough approach.

Then gently broaden: 'Can I ask you something honestly, Priya? When I hear about someone who's managing a full-time job, two young children, broken sleep, and a partner who's away during the week — that level of demand would exhaust anyone. Do you think there's an element of burnout in how you're feeling?' Be prepared for initial resistance. She may insist it's medical. Don't argue — agree it could be both.

Management plan: baseline bloods (TFTs, FBC, ferritin, B12/folate, vitamin D, glucose, U&Es), review in 2 weeks to discuss results. Meanwhile, address the energy drinks (high caffeine is worsening sleep quality), discuss sleep hygiene, and explore whether she has any support — family, friends, childcare options. If mood is low, offer a validated screening tool (PHQ-9) at the follow-up.

Time check: Minutes 1-3 on validating fatigue and exploring the sleep/lifestyle picture. Minutes 3-6 on systematic organic screen and addressing the thyroid belief. Minutes 6-9 on psychosocial exploration — mood, burnout, support network. Final 3 minutes on investigation plan, lifestyle advice, and safety-netting.

How Examiners Mark This Case

Data Gathering and Diagnosis: Examiners assess whether you take a structured approach to fatigue — screening for organic causes (thyroid, anaemia, diabetes, vitamin D) while thoroughly exploring sleep pattern, mood, and psychosocial context. They look for identification of the energy drink dependency as a maintaining factor and whether you screen for depression. A systematic approach that covers both organic and functional causes scores highest.

Clinical Management and Medical Complexity: Examiners evaluate whether you order appropriate but not excessive investigations, explain what you're testing and why, and provide interim lifestyle advice (caffeine reduction, sleep hygiene). Offering a follow-up appointment to review results and reassess mood demonstrates continuity of care. Knowledge of the broad differential for unexplained fatigue shows clinical breadth.

Relating to Others: Examiners look for validation of the patient's exhaustion without either colluding with the thyroid belief or dismissing it. The ability to negotiate — 'I'll check your thyroid AND look at the bigger picture' — rather than oppose the patient's agenda is key. Acknowledging the enormous demands of her life situation and gently exploring burnout without being patronising demonstrates person-centred care.

Example Opening

Strong opening: "Hello Priya, thanks for coming in. I can see you've been struggling with tiredness — three months is a long time to feel like that. Tell me what's been going on, and then I'd like to ask you some specific questions so we can work out what's causing it."

When addressing the thyroid request: "Your mum's thyroid condition absolutely makes it reasonable to wonder about that, and I'm happy to check it. What I'd like to do is cast the net a bit wider though — check your iron, vitamin D, and a few other things at the same time, so we're being thorough rather than just looking at one possibility."

Avoid: "I think it's probably just stress and tiredness from the kids" — even if likely true, this dismisses her concern, doesn't warrant investigation, and she'll disengage immediately.

How This Appears in the SCA

TATT is one of the most common SCA presentations because it tests your ability to manage diagnostic uncertainty, explore psychosocial factors, and negotiate investigations with a patient who has a fixed health belief. Examiners value candidates who validate the patient while broadening the consultation beyond the presenting request.

Key Statistic

Tiredness accounts for approximately 5-7% of all GP consultations. In the majority of cases, no organic cause is found — psychosocial factors including sleep deprivation, stress, and depression are the most common underlying contributors.

Relevant Guidelines

• NICE CKS: Tiredness/fatigue in adults
• NICE CG91: Depression in adults
• NICE NG12: Suspected cancer (for red flag screening in unexplained fatigue).

Frequently Asked Questions

What blood tests should I order for a TATT presentation in the SCA?

A reasonable baseline panel includes: FBC (anaemia), ferritin (iron deficiency even without anaemia), TFTs (hypothyroidism), vitamin D, B12 and folate, fasting glucose or HbA1c (diabetes), U&Es (renal function), and LFTs if alcohol intake is relevant. This covers the common organic causes without over-investigating. Avoid ordering obscure tests like cortisol or autoimmune screens unless the history specifically suggests them — over-investigation in the SCA suggests diagnostic uncertainty.

How do I manage a patient who is convinced they have a specific diagnosis?

Don't oppose the belief directly — negotiate alongside it. Say: 'I can see why you'd think that, and we'll absolutely check for it. But I'd also like to look at a few other possibilities so we're being thorough.' This validates their concern while keeping the diagnostic net wide. If results are normal, the follow-up appointment becomes the opportunity to revisit the psychosocial factors with the credibility of having taken their concern seriously first.

When should I consider depression in a TATT presentation?

Always screen for it. Fatigue is a core symptom of depression and is often the presenting complaint rather than low mood itself. Ask about enjoyment (anhedonia), motivation, concentration, sleep quality (early morning waking is characteristic), appetite changes, and feelings of hopelessness. If two or more of these are present alongside fatigue, use a PHQ-9 to formally assess severity. Many patients with depression present as 'tired' rather than 'sad.'

How do I address lifestyle factors without sounding dismissive?

Frame lifestyle as part of the clinical picture, not as the diagnosis itself: 'The blood tests will check for medical causes. In the meantime, there are some things that might be contributing to how you're feeling that we could start addressing now.' Then discuss specific, actionable changes: replacing energy drinks with water (caffeine after 2pm disrupts sleep architecture), establishing a consistent bedtime routine, and identifying even 20 minutes of daily activity. This positions lifestyle changes as additive to medical investigation, not instead of it.

What are the red flags for fatigue that require urgent investigation?

Red flags in unexplained fatigue include: unintentional weight loss (>5% in 3 months), night sweats, unexplained lymphadenopathy, new or changing lumps, persistent fever, significant bleeding (menstrual or GI), progressive neurological symptoms, and a history of recent foreign travel. Any of these should prompt urgent investigation including cancer screening per NICE NG12 suspected cancer referral guidelines. In Priya's case, none are present, which is reassuring.