hi..scalp psoriasis is a common disorder that makes raised,reddish often scaly patches - which can occur as a single patch or can affect your entire scalp which can also spread to forehead,back of neck or ears. it is not contagious. Symptoms usually include scaly red bumpy patches,silvery white scales,dry scalp,itching,burning or soreness . would advise you to see a dermatologist who can prescribe the neccessaary medications after clinical examinations.
Next Steps
Visit a dermatologist