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.
Calf Strain. A calf strain is a tear of the muscle fibres of the muscles at the back of the lower leg and can range from mild to very severe. Calf injuries usually occur as a result of a sudden pushing off movement or from excessive over-stretching of the calf muscles as demonstrated in jumping activities or during quick changes of direction.