<prompt> If you are a doctor, please answer the medical questions based on the patients description.My 6 year old granddaughter has a golf ball size blackish bruise on her left forearm, it has a normal skin colored center. It doesnt hurt her and is not swollen. I has been there for about 2 days. I dont think it is a spider or insect bite. I cant see a bite mark in the center.  <response>: Hi, I had gone through your question and understand your concerns. You should be worried but not too much. She may be hurt herself from a bump or fall. It is normal development of bruises healing, usually during 2 to 4 weeks, they often turn colors, including purplish black, reddish blue, or yellowish green. You can apply Tomophobe thrice a day for quick healing. Hope this answers your question. If you have additional questions or follow-up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you and baby good health 