Seborrhoea (or seborrhea) is the name given to excessively oily skin. It is due to overactive sebaceous glands and can affect both males and females. The oil produced by the skin is called sebum.
Although most people with seborrhoea have no other health problems, it is sometimes a sign of underlying Parkinson's disease or acromegaly. It may also be due to excessive androgens in women, associated with and less commonly, congenital adrenal hyperplasia.
The skin feels unpleasant, and seems to get dirty quickly. The face appears shiny. Make-up may run off or cake.