GPAtlas🧭 When to suspect
Persistent physical symptoms (PPS) – the term now preferred over "medically unexplained symptoms" – describes distressing bodily symptoms that persist (typically beyond several months), cause genuine functional impairment, and are not fully explained by a defined disease after appropriate assessment. They are extremely common, accounting for around a fifth to a quarter of all primary care consultations. Most settle within weeks; about a quarter persist or recur.
The older label is unhelpful because it implies the symptoms are not real or are "all in the mind". In fact they are genuine and often arise from a sensitised, over-reactive nervous system (central sensitisation) rather than ongoing tissue damage. PPS is best made as a positive diagnosis – supported by a recognisable pattern and, in some presentations, positive rule-in signs – not as a diagnosis of exclusion reached only once every test is normal.
The key skill in primary care is threefold: exclude red-flag (organic) disease with proportionate assessment while avoiding harmful over-investigation; validate the patient's experience; and shift the goal from a single "cure" towards improved function and quality of life – a twin-track approach addressing physical symptoms and any psychological distress in parallel. Recognising the common functional syndromes helps:
| Predominant symptom pattern | Commonly recognised label |
|---|---|
| Widespread pain and stiffness | Fibromyalgia / chronic primary pain |
| Profound fatigue with post-exertional malaise | ME/CFS |
| Recurrent abdominal pain with altered bowel habit | Irritable bowel syndrome |
| "Fit-like" episodes, limb weakness, tremor or sensory change | Functional neurological disorder (FND) |
| Chronic daily headache | Chronic tension-type headache / chronic migraine |
| Chest pain or palpitations with normal cardiac work-up | Non-cardiac chest pain |
| Multiple symptoms across several body systems | Somatic symptom disorder / bodily distress disorder |
Source: NICE NG193 · NICE NG206 · Royal College of Psychiatrists · BJGP
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