Am I having a reaction to internal sutures? (Photos)

I am sorry to hear about the complication you are experiencing; the photographs do seem consistent with a hypersensitivity or allergic reaction.  I have seen similar reactions when surgical glue was used on incision lines. Definitive diagnosis would require in-person evaluation; is consultation with a dermatologist an option for you? Best wishes.

Thank you for your question and pictures.  A delayed redness that you describe could be allergic reaction or infection.  I think it is most likely allergic, based on the photos and your (limited) history reported above.  It is not likely to be related to the sutures themselves.  If you cannot see your doctor soon, then yes, I would think talking to your personal doctor would be helpful.  A dermatologist may be able to provide a useful opinion.  If you are having fevers, increasing pain, redness, swelling - you should be seen right away.

Thanks for your pictures.  It would be unusual to have a fungal infection and/or an allergic reaction.  Your plastic surgeon should be able to perform test to see if either one of these issues is occurring.  Once the diagnosis is established then the most appropriate treatment would be started.