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.
Pain and tightness in the calf muscles may be caused by muscle fatigue, dehydration, heat or muscle cramps commonly known as a charley horse, according to WebMD. A person may also experience pain in the calf muscles when muscles and connective tissues along the shin bone are inflamed.