Actinic keratoses that develop on the lips are referred to as actinic cheilitis. The clinical appearance of an actinic keratosis is that of a small (several millimeters), red scaly papule or plaque, with induration and thickening of the epidermis. There may be associated erythema.
Blood Clots. A blood clot needs to be considered as a cause of calf pain, especially when the calf pain is not the immediate result of an injury. Blood clots can form is the deep veins of the leg, causing a blockage in circulation. This may cause swelling and pain in the calf.
Bacterial skin infection known as cellulitis can cause calf swelling. Other symptoms include pain, warmth to the touch and redness. The leg is commonly affected. Any break in the skin can lead to infection, including minor scratches, bites, cuts or skin damage. Cellulitis can also occur with no apparent reason.