The Department of Defense is headed by a civilian; the Secretary of Defense, who is appointed by the President of the United States. Under the Secretary of Defense, there are three military departments: The Department of the Army, the Department of the Air Force, and the Department of the Navy. 1  Each of these military departments are also headed up by civilians; the Secretary of the Army, the Secretary of the Air Force, and the Secretary of the Navy.
Melanoma is not as common as other types of skin cancer, but it's the most serious and potentially deadly. Possible signs of melanoma include a change in the appearance of a mole or pigmented area.
More than one-third of the skin cancer lesions itched, according to the study. Just under 30 percent were painful. Many people reported that their lesions were both painful and itchy. Melanoma lesions were the least likely to be painful or itchy. Other skin cancers, especially basal cell carcinoma and squamous cell carcinoma, were more likely to be itchy or painful, the findings showed. Melanoma is much less common than basal cell and squamous cell skin cancers, but it is far more dangerous, according to the American Cancer Society.