Cystinosis is a rare inherited condition that affects the kidneys and eyes.
Cystinosis affects around 1 in 200,000 people in the UK. Two or three new cases are diagnosed each year. It is usually first diagnosed in children aged under 2 years old.
Cystinosis is caused by a build-up of an amino acid called cystine in the body. This causes the kidneys to leak essential salt, water and potassium, which can eventually lead to kidney failure.
Read about cystinosis in the rare conditions section of the Kidney Care UK website.