Hi, Welcome to Health care magic forum.
It appears to be a fungal infection
, it is temporarily going and then recurring.
I advise you to consult a dermatologist
for diagnosis and treatment.
I usually prescribe to my patient with such symptoms,grisofulvin, and a mixed sterid ointment.
Take more of green leafy vegetables, pulses, sprouts,and
protein rich foods to prevent recurrence.
Wishing for a quick and complete recovery. Thank you.