It sounds like you have developed seborrheic dermatitis. Please do not pick on the white areas as you are further inflaming your skin.
Please share photographs of the lesions via direct online consultation option and I can help you out with treatment.
Management of seborrheic dermatitis is detailed and involves medicines plus lifestyle changes.
Next Steps
Consult a certified dermatologist.
Health Tips
Do not self-medicate or pick on the lesions.