Acute medicine, gastroenterology, neurology and haematology clinicians get a practical approach to severe unexplained abdominal pain, autonomic disturbance, neuropsychiatric symptoms and hyponatraemia. Random urine ALA and PBG testing, precipitating medicines or fasting, porphyria-safe prescribing, carbohydrate support and intravenous haemin for severe attacks shape recognition and treatment.

Acute medicine, emergency and respiratory clinicians get a practical framework for rapidly evolving allergic reactions. Multisystem symptoms, absent skin findings, intramuscular adrenaline, repeat dosing, beta-blocker use, adjunctive treatment, biphasic reactions and safe discharge planning are kept together.

General practice, endocrinology, geriatrics and orthopaedic teams get a practical osteoporosis framework. Fragility fractures, vertebral compression, FRAX, bone mineral density, secondary-cause testing, calcium and vitamin D replacement, anti-resorptive therapy, denosumab timing and anabolic treatment for very high fracture risk are covered.

Clinic-facing internal medicine, rheumatology and ophthalmology learners get a pattern-recognition approach to recurrent mouth ulcers, genital ulceration, painful red eye and swollen leg. Clinical diagnosis connects with organ-directed investigation, mimic exclusion and escalation for ocular, neurological, vascular or gastrointestinal disease.

Severe limb, back or chest pain in sickle cell disease needs early analgesia and an active complication screen. Fever, respiratory symptoms, abdominal pain, neurological symptoms or a haemoglobin drop should change the assessment before the pain is treated as uncomplicated crisis.

New hypoxaemia with cough, fever and ground-glass change should trigger a careful medicine review. This teaching walks through drug-induced interstitial lung disease, linking timing of exposure, HRCT abnormalities and exclusion of infection, heart failure, autoimmune disease and other ILD causes.

Early-onset COPD, fixed adult-onset asthma or unexplained liver disease should make alpha-1 antitrypsin deficiency visible. Serum levels can reassure falsely during infection or inflammation, so high suspicion may need SERPINA1 sequencing and liver assessment.

Chest pain assessment changes when the ECG, haemodynamic state or troponin place the patient on an immediate or early angiography pathway. Open this for STEMI thresholds, high-risk NSTEMI timing, coronary territories and the practical checks before PCI and dual antiplatelet therapy.

The trigger is a dry cough, exertional dyspnoea and fever that do not settle after antibiotics. Open this first for the practical clues to cryptogenic organising pneumonia: peripheral or migrating opacities, high-resolution CT, and the need to exclude secondary causes before settling on the label.

Lung transplant medicine rewards thinking by timing. Early graft dysfunction, later rejection and shifting opportunistic infection risk require a structured differential, while tacrolimus interactions, new hypoxaemia and falling lung function should prompt early transplant-team involvement rather than routine ward management.