I have round scab looking marks on my legs and thighs and they keep appearing? what could they be?

i have problem skin already and i have been given medicine to treat it but it seems that it has gotten worse. what could be the problem?
Answer:
RINGWORM
PSORIASIS
IMPETIGO
BUG/SPIDER BITES

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Have you gone to the dermatologist? I know you said you have been given medicine for it, but you need to make sure you are going to a specialist not just a family practice.

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