Our Symptom checker provides clinical advice on what to do next based on your symptoms.
Blisters form in response to friction or pressure on the skin. Many need only simple care; others may be a symptom of disease and need to be treated by your GP.
Shingles — infographic
Shingles is a viral infection that causes a painful blistering rash. This infographic provides you with information on the symptoms, treatments and vaccination.
Impetigo, or school sores, is a highly contagious skin infection that causes sores and blisters. It's very common and affects mainly children.
Cold sores are blister-like spots that appear in or around the mouth. Find out about prevention, common triggers, treatment and self-care options.
Mouth sores and ulcers (canker sores)
An ulcer is a common type of mouth sore. It can make everyday tasks like teeth brushing, talking, eating and drinking feel uncomfortable.
Genital herpes spreads by skin-to-skin contact, like kissing or foreplay. Learn how to prevent the spread of the virus and what to do if you catch it.
Hand, foot and mouth disease
Hand, foot and mouth disease is a common viral illness mainly affecting children under 10 years old but sometimes affecting older children and adults.
Chickenpox is a mild childhood illness, that can also occur in adults. It is occasionally serious. Here's how you can prevent catching chickenpox.
Shingles is a painful rash caused by the chickenpox virus. Here's how to recognise the symptoms, prevent shingles and get the best treatment for you.
Smallpox is a highly infectious disease, eradicated worldwide by successful vaccination. Read about prevention and its relationship to monkeypox.