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.
A calf strain can be caused by: 1  Stretching the calf muscles beyond the amount of tension that they can withstand. 2  Suddenly putting stress on the calf muscles when they are not ready for the stress. 3  Using the calf muscles too much on a certain day.  A direct blow to the calf muscles.