Conversation: The conversation between human and AI assistant.
[|Human|] I have a large area of redness that started on my knee and has spread down half of my right leg. I am being treated with antibiotics but really it looks like large spreading bruises. Any ideas what this could be. One doctor said that is was atypical cellulitus but it is not hot, swollen or painful. Any ideas what this could be?
[|AI|]  Hi there. Dermatology is a visual field. One needs a photograph or to look at the lesion. Please feel free to upload a clear digital photo of the lesion using the upload data icon to the right of your screen. Alternatively feel free to use the premier ask-a-specialist feature & get in touch with me. It may just be a simple fungal infection or deramtophytosis or Tina corporal. Have the doc or any GP do a scraping & examine under a microscope using 10% 0r 20% KPH (potassium HY Chat Doctor.  It may alternatively be one of a group of skin disorders called granulators cutaneous erythemas A skin biopsy & histopathology will further help clinch the diagnosis. I hope have pointed you in the right direction to make an informed choice! Cheers & here's to a clear skin!!