KS blotches, called tumors or lesions, range in color from pinkish-red
to brownish-blue. The lesions are usually flat, painless, and do not blanche
– turn white – when pressure is applied to them (unlike bruises).
KS lesions on the skin are not usually life threatening. However, they
can be emotionally troubling, particularly when they occur on the face.
Over time, these lesions may become elevated, more noticeable, and painful.
Some people may only experience one lesion, perhaps on their leg, but
not anywhere else. Some people with KS may see new lesions occur very
slowly, on the order of one every few months; others may experience several
new lesions every week. Generally speaking, the more suppressed the immune
system becomes, the more likely it is that new lesions will occur.
KS lesions inside the mouth can make eating difficult and painful. Lesions
in the gut, particularly in the large intestine and the colon, can cause
diarrhea, cramping, and bleeding. KS of the lungs (pulmonary KS) can cause
severe breathing problems and discomfort. KS lesions in the gut and in
the lungs can be fatal if not treated or controlled.