What it is
Sores can grow quickly and can be triggered by minor injuries, including surgery.
Treatment includes steroid creams or tablets and other medicines that calm the immune system, along with careful wound care.
Common signs
- A small red or purple spot or blister that turns into a sore
- A painful ulcer with a purple or dark edge
- Sores that grow quickly
- Fever or feeling unwell
How it is usually diagnosed
- Examination by a dermatologist
- Ruling out infection and other causes with swabs, blood tests and a biopsy
Records worth keeping
Keeping these together makes each appointment easier, especially when you see a new doctor:
- Dermatology letters
- Biopsy and swab results
- Wound care plans and photos
- Medicine lists
Questions to ask your doctor
- Is this linked to another condition I have?
- How should the wound be cared for?
- How long will treatment take to work?
When to get help right away
Call 112 or go to the nearest emergency department if you have:
- A sore that is spreading fast, with fever or feeling very unwell: get urgent help the same day
This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.