your vague description is really not sufficient to make this important diagnostic call. the only way that your husband can be properly diagnosed is to see a medical professional/dermatologist for a hands-on examination.
my husband has a discolored hard spot on his lower right back. it has increased in size and painless. what could it be? . it started as about the size of a quarter and now about 6-8inches long and the skin is reddish purple. it started about 3 months ago.