If you develop eruptive xanthoma, you should get treatment straight away, added the AAD.
Meanwhile, you could also be at risk of heart disease if you notice red or purple lines underneath your fingernails.
These lines, known as splinter haemorrhages, are caused by tiny blood vessels becoming damaged.
Small splodges of blood become visible underneath the nail. As the nail grows outwards, these splodges turn into lines of blood, which resemble splinters.