AIDS (acquired immunodeficiency syndrome) is the most advanced stage of infection with HIV (human immunodeficiency virus), a virus that attacks the cells your immune system uses to fight infection. Without treatment, HIV can damage your immune system over many years until it reaches this final stage, though modern treatment means most people with HIV never develop AIDS.
Autoimmune hepatitis is a rare condition where the immune system attacks the liver. Find out the symptoms, causes, diagnosis and treatment options.
Learn what chlamydia is, its symptoms and causes, how it's tested for and treated, and how to protect yourself and your partners.
Fungal infections affect your skin, nails, mouth or organs and range from mild to serious. Find out the symptoms, causes, types and treatments here.
Genital warts (Condylomata Accuminata) are a viral infection caused by exposure to the Human Papiloma Virus (HPV).
Find out about gonorrhoea: the symptoms, how it's spread, how it's diagnosed, and the treatment options available, plus when to get tested for it.
Hepatitis B is a viral infection that can affect the liver. Hepatitis B is not very common in the UK, with less than 2 in every 100 of individuals attending for screening testing positive in the first quarter of 2012. Hepatitis B is more common in the developing world.
Hepatitis C is a viral infection that can affect the liver.
Human immunodeficiency virus (HIV) attacks the immune system making the body more prone to illness.
Find out what syphilis is, its symptoms, causes and risk factors, how it's diagnosed, and the antibiotic treatment used to cure this STI at any stage.