Since the pandemic is going on one of my relative had an insect bite few days back and followed by severe itching and redness around the area . I told my relative to send the picture of the same which I have posted here. I asked her if she had any fever she said no but  she said she was feeling feverish for the past few days. She is non diabetic but hypertensive on medication .

Based on the image I made a diagnosis of post insect/bug bite urticaria leading to severe itching and excoriation and  finally cellulitis. I gave her antibiotics with cetrizine and lactocalamine for local application, her symptoms resolved. Since I am a medical officer,  I could not think of other possibilities .So based on  the history and picture what is your diagnosis and  what are the other possibilities as well?