Understand your symptom — and what to do next.

Pain or discomfort in the chest can range from harmless muscle strain to a life-threatening heart attack.

Awareness of your heartbeat — often benign, occasionally a sign of arrhythmia.

Fluid build-up in tissues — common in legs, but sudden one-sided swelling may indicate a clot.

Head pain ranges from common tension or migraine to rare but serious causes that need urgent evaluation.

Dizziness covers vertigo, lightheadedness, and unsteadiness — each points to different causes.

Loss of sensation in part of the body — sudden numbness with weakness is a stroke until proven otherwise.

A pins-and-needles sensation is usually positional, but persistent tingling may signal nerve disease.

Difficulty breathing can stem from the lungs, heart, blood, or anxiety — onset and severity guide urgency.

A cough is usually viral and self-limiting, but persistent or bloody cough needs evaluation.

Belly pain ranges from mild indigestion to surgical emergencies — location and pattern guide care.

Nausea is a non-specific symptom — context and associated features guide the cause.

Vomiting often settles, but persistent or bloody vomiting requires assessment for dehydration and serious causes.

Loose or frequent stools usually settle within days — bloody or prolonged diarrhea needs evaluation.

Infrequent or difficult stools are usually treatable with fluids, fibre and movement.

A burning sensation behind the breastbone — usually GERD, but cardiac causes must be excluded.

Abdominal fullness or distension — usually functional, but persistent bloating needs evaluation.

A raised body temperature is usually a sign of infection — most cases settle but a few need urgent care.

Persistent tiredness that does not improve with rest deserves evaluation for a treatable cause.

Losing >5% of body weight without trying needs investigation for medical causes.

Most back pain is mechanical and improves within weeks — a few patterns need urgent assessment.

Joint pain may be mechanical, inflammatory, or infective — pattern of joints and timing guides cause.

Most sore throats are viral and self-limiting, but a few need antibiotics or urgent assessment.

Skin rashes range from harmless reactions to signs of serious systemic illness.

Difficulty falling or staying asleep — often improves with sleep hygiene and treating underlying causes.

Excessive worry that interferes with daily life — effective talking and medical treatments exist.