<unk>  symptoms are chronic and have an onset during adulthood between the ages of 30 and 50 years of age. However, there were reported cases of early onset as early as 5 years of age and late onset as late as 75 years of age. The main symptom is the development of small papules into painless lesions that are surrounded by silvery scales. The lesions are painless, however, there is a chance that the patient may experience extreme urges to itch them. In time, these lesions grow up to a radius of 0.75 inch and develop into red-brown nodules with a central plug of keratin. As more lesions develop, they can come together and form larger keratotic plaques. These lesions are usually observed on the lower extremities, however, can also develop on the upper extremities, such as, the arms, the head and the neck. The only parts of the body that<unk>  do not form are the palms, soles, and mucous membranes. Lesions may heal spontaneously without treatment, however, new ones will develop in its place. Other symptoms that may be observed: * Hyperkeratotic cone-shaped papular plugs * Hyperkeratotic verrucous plaques * Diabetes mellitus * Hepatic insufficiency * Presence of albumin in the urine * Excess sugar in the urine
Kyrle disease
Haff disease
Degos disease
Salla disease
Camisa disease
Bayoud disease
Borna disease
Pott disease