Welcome to HCM.
The knots that you are talking about may be enlarged lymph nodes due to dandruff
or some other infection in the region. Steroids
do not seem to be the right kind of treatment. Probably you have mistook antibiotics as steroids.
Any way consult a dermatologist
and let him examine the lesions and treat you according to the findings. If indicated excision biopsy
of the lesion may also be needed.
Avoid taking unnecessary medicines, as all of them are harmful and have side effects.
Wish you all the best.