The causes of<unk>  are unclear and can be idiopathic. The only correlation that has shown light is the frequent association with an underlying disorder, such as, diabetes mellitus, chronic kidney disease, hyperlipoproteinemia, liver abnormalities, and congestive heart failure. However, there had been cases where<unk>  was seen without any conjunction with the previous mentioned disorders. Due to the causes of<unk>  is unknown, the best way to prevent the disease is to prevent the disorders that are usually reported in conjunction with it.
Kyrle disease
Haff disease
Degos disease
Salla disease
Camisa disease
Bayoud disease
Borna disease
Pott disease