Emergency warning signs reference
The stroke and heart attack signs public health bodies publish.
Start here
Three steps to get your bearings
SymptomGuide is a research-based reference. It explains what published guidance says and offers printable checklists. It cannot diagnose a problem; see the disclaimer. In an emergency call your local emergency number (911 in the US, 999 in the UK).
Step 1: Know when not to wait
Home first aid kit checklist
A tickable list to get ready before something happens.
What first aid basics should every home know?
General background on home care and when to escalate.
Step 2: Keep a simple record
Symptom diary
A printable two weeks of notes on timing, temperature and context.
When should you see a doctor for a fever?
General background on fever and when it needs attention.
How do you know if a cough is lingering too long?
General background on how long a cough usually lasts.
Step 3: Prepare to talk to a clinician
Questions to ask your clinician
A checklist for symptoms, new medicines and the end of the visit.
What side effects should you watch for with new medication?
Background for questions to a pharmacist or prescriber.
If symptoms are severe, sudden or worrying, contact a clinician or urgent care rather than relying on a website. In the US you can call or text 988 for a mental-health crisis; elsewhere use a crisis line for your country.