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Black vomit during severe vomiting can represent upper gastrointestinal bleeding even with an initially normal haemoglobin, while dehydration can also raise urea; serial reassessment, gastroenterology discussion and shared anticoagulation decisions help manage the uncertainty.

Acute medicine, gastroenterology and haematology teams get a case involving profound microcytic anaemia, chronic gastrointestinal blood loss, blood in stoma output and self-neglect. It links cautious transfusion and investigation with direct examination of hidden care problems, decision-specific capacity, safeguarding and reasonable adjustments for neurodivergent patients.

Acute medicine, gastroenterology and safeguarding teams get a case involving profound microcytic anaemia, blood in stoma output and self-neglect. It links chronic physiological adaptation with urgent investigation, consent, decision-specific capacity, reasonable adjustments for neurodivergent patients and multidisciplinary care.

Acute medicine, neurology and ophthalmology clinicians get a diagnostic-reasoning case for binocular diplopia with headache, ptosis and abnormal ocular movements. It separates true diplopia from blurred vision, localises ocular motor findings and challenges premature closure on microvascular cranial neuropathy.

Good for acute medicine and cardiology clinicians assessing exertional dyspnoea in a young, athletic-looking adult. Tachycardia, hypertension, polycythaemia, mild transaminitis and possible cardiomegaly are linked to targeted, non-judgemental questions about hormones, gym drugs and online supplements.

Haemoptysis-like symptoms, night sweats and weight loss create real diagnostic uncertainty when observations, inflammatory markers and imaging look reassuring. A safer review restarts from the beginning, checks key investigations personally and uses graded assertion when discharge feels unsafe.

Low GCS is a syndrome, not a diagnosis. The first bedside sequence is airway, oxygenation, GCS, glucose, exposure, ABG and ECG, while sepsis, CNS infection, seizure, metabolic disturbance and toxidrome remain active possibilities.

Vomiting and poor intake can explain AKI, but they should not end the search. Recheck fluid response, dip urine, assess bladder and medicines, and add calcium or paraprotein testing when back pain, anaemia or hypercalcaemia point towards multiple myeloma.

Collapse followed by hallucinations or thought insertion needs a rebuilt timeline before anyone settles on psychosis. The strength here is witness history, formal mental state examination, and a clear plan for when MRI, EEG or lumbar puncture should test an encephalitis or epilepsy hypothesis.

The pitfall is reassuring yourself with age, manner, a clear chest X-ray or a half-finished examination. This case is worth hearing for the reminder that persistent fever, Staphylococcus aureus bacteraemia and a murmur should push blood cultures, repeat cardiac examination and echocardiography up the list.