I used 20% Tca peel on arm to remove eczema scars. & I'm not sure what went wrong with my skin. I believe it's a burn. (photo)

 Yes, it is normal for TCA to cause swelling?  However, the severity is individualized based on the percentage of TCA used. If there is significant swelling to the face please contact your physician.

It looks like an area of persistent erythema.  Does it blanch (fade) when you press it?  If it is indeed vascular, then the best treatment is the V Beam Laser.  I would estimate 1-2 treatments.

The lesson learned is do not self treat!!!! Now you need IN PERSON medical care. Please seek this care.///