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Erythema multiforme is a skin condition that can be caused by an infection or some medicines. It usually gets better on its own in 2 to 4 weeks.
The main symptom of erythema multiforme is a rash.
Sometimes you can get the rash inside your mouth or on your lips, eyes, anus or genitals. This can be painful.
You may also have other symptoms such as:
It may be possible to treat the cause of your symptoms.
You think you have erythema multiforme and:
You can call 111 or get help from 111 online.
These may be signs of a serious reaction and may need immediate treatment in hospital.
Do not drive to A&E. Ask someone to drive you or call 999 and ask for an ambulance.
Bring any medicines you take with you.
Erythema multiforme usually gets better on its own in 2 to 4 weeks.
Sometimes, you may need:
Erythema multiforme is usually caused by an infection, such as the herpes simplex virus (which also causes cold sores) or a bacteria that causes lung conditions like pneumonia.
It can sometimes be caused by some vaccines or medicines such as non-steroidal anti-inflammatory drugs (NSAIDs), antibiotics, statins and medicines for epilepsy.
If it's caused by a medicine, you usually need to stop taking it. But do not stop taking any medicines without talking to a doctor first.
