Disseminated Superficial Actinic Porokeratosis

What is disseminated superficial actinic porokeratosis?

DSAP is a skin condition manifested by multiple, dry, scaly rings, each measuring up to 1 cm (1/2 inch) across. They are found mainly on the forearms and legs. It is due to excessive sun exposure causing thickening of the skin. It is sometimes confused with actinic keratosis which is also caused by sun exposure; however, actinic keratosis is more likely to arise on the face and hands.

DSAP is twice as likely to develop in women compared with men and is more common in lighter skin type. Itnormally develops between 30-50 years of age. It is not contagious.

What causes disseminated superficial actinic porokeratosis?

Sun and/or ultraviolet light exposure causes DSAP. This condition tends to affect people with fair skin who burn easily and tan poorly in the sun. It may appear more obvious in summer and less obvious in winter. The best way to stop this skin condition from worsening is to avoid sun exposure (including sun beds). Patients taking medication or with illnesses that weaken the body’s immune system are also more likely to develop this skin condition.

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