Hi my mother is 78 and she is breaking out on her legs and arms with black spots and they break open and don't heal for two months at a time. They are not itchy but they leave a awful scar. they come in three's at a time. She ahs been to specilist and they don't know what it is. She has cleaned her appartment from top to bottom for bites but nothing. This has been gone on for over a year now and I want answers for her. I can't seem to get help for her. she is a mess.