User:Mr. Ibrahem/Age spot

Age spot, also known as solar lentigo, is a dark spot associated with aging. They range in color from light yellow, to brown, to black. Their shape may be variable and up to several centimeters across. They usually have a distinct border. They may occur as groups on skin that is frequently exposed to the sun.

The cause is sun exposure. The underlying mechanism involves a build up of the pigment melanin. Diagnosis is often based on examination. In unclear cases a biopsy may be done.

The condition is not serious. Treatments involve the use of cryotherapy or laser therapy. Use of 30% trichloroacetic acid on the area may be helpful. Attempts at skin whitening with hydroquinone are not effective. Without treatment, it is a long term condition. Prevention is by using sunscreen or avoiding the sun.

They are very common, particularly after the age of 40. They are most common in Caucasians and Asians. While sometimes referred to as "liver spots", they have no association with liver issues.