Hi doctors, I have been injected PRP for hair thinning 10 days ago and I still see a red area, big like a fingernail. The rest of the head that has been injected is fine. The red area is not painful and I had this redness since the day of the injection. Maybe slightly less but not sure. The doctor is a friend, so before asking him I would like other opinions. Could it be something bad? Or is it nothing? A but worried.. Thanks in advance
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