Hello,
It can be due to abscesses or erythema nodosum. It results in reddish, painful, tender lumps most commonly located in the front of the legs below the knees.
Diagnosis is by physical examination and biopsy of the lesion. Other lab investigations like complete blood count, ESR,ASO titer, urinalysis, throat culture, intradermal tuberculin test, and chest x-ray may also be done.
I would recommend a physician/dermatologist’s evaluation. Treatment depends on the confirmation of diagnosis. I hope it helps. Take care and please do keep us posted on how you are doing.
Try a cream called Sarna. My daughter uses it for her severe Eczema and skin issues from Celiac disease. We get it at Walgreens but I'm sure other stores have it. It also sounds like Impetigo, which does cause that type of scarring, so you may want to talk to the dr about it. Good luck :)
PJ