If patient Hx (or Dx) proves tricky, always consider
- Mental illness
- Endocrine dysfunction
- Anaemia
- Chemicals (Drugs: Rx; OTC; recreational | Environmental)
- Viruses; Vector-born disease
- Auto-immune disease
- A para-neoplastic syndrome
Ix to consider in such circumstances
- Serology - CRP; LFTs; TSH; fasting BSL; infection serology; RF; ANA; (PSA)
- Haematology - FBC; ESR
- Imaging - CXR; abdo/pelvic US or CT scan; brain CT/MRI scan; (mammogram)
- Clinical tool - K10 questionnaire