question: Hi Doctor my name is Ela. I have a questions to you. I was chatted with my sister in Abu Dhabi just few hours ago. She told me she got allergies on her skin and its red color. She said once it healed it turn black color, and couple days later it will came back again. She has a lot of red spot on her butt. I m so worried about her health. Do you have an idea what kind of allergies she d got? Im very much appreciate it, if you can help me answer my question. Thank you so much