 [ Symptoms ] my husband found a dark lumpy patch on the interior of my buttocks it does not itch or burn what could this be  the area does not have any noticeable discoloration or raised skin in the surrounding area it is localized and appears to be greyish black in color   looks a little fuzzy but my husband said there is no hair i would not even know it is there unless he told me but it concerns me as it was not there before [ Disease ] if overdose is suspected contact a poison control center or emergency room immediately us residents can call the us national poison hotline at 1 800 222 1222 canada residents can call a provincial poison control center symptoms of overdose may include severe stomachabdominal pain or cramping persistent nauseavomitingdiarrhea