William Wildgoose BVMS CertFHP MRCVS is a veterinary surgeon at the Midland Veterinary Surgery in London and specialises in ornamental fish. Here he explains what causes ulcers and how you can treat ...

These blisters occur alone or in clusters. Cold sores weep clear yellow fluid before they crust over. Blisters may come back due to stress, menstruation, illness, or sun exposure. An actinic ...

What syphilis looks like depends on which of the four stages is involved. Small chancre sores appear with syphilis, a sexually transmitted infection (STI), in the primary stage. A reddish brown rash ...

White spots on the tongue have different causes. They can look like pimple-type bumps, or they may be white canker sores with a red edge. A fungal infection is the cause of oral thrush, usually with ...