How to describe a measles rash

The rash may start as separate spots that become more joined together as it moves from the face towards the trunk and limbs. It can occur with fever, cough, a runny nose, sore or red eyes and small spots inside the cheeks. Skin colour can change how redness appears, so describing texture, location and progression is more useful than relying on a colour label.

Many conditions cause rashes. A description cannot establish measles by itself, particularly without information about vaccination and contact with an infected person.

Write down when fever and rash began, where the first spots appeared, how quickly the rash moved, and whether it fades briefly when pressed. Note cough, eye symptoms, mouth spots, swollen glands and fluid intake. Take photographs only if safe and appropriate, and call a GP or health service before going in person.

Until you receive advice, limit close contact and avoid shared waiting areas. Keep the person comfortable with fluids and rest.

Seek emergency help for breathing difficulty, a seizure, confusion, severe weakness, a stiff neck, signs of serious dehydration or difficulty waking. Contact a clinician promptly for a rapidly worsening rash, ongoing fever, or illness in a baby, pregnant person or someone with reduced immunity.

Ask what conditions could explain the rash, whether examination or testing is appropriate, how long to avoid close contact, and which comfort measures are safe. Share the immunisation record, travel or exposure history, and a timeline of every symptom.