The itchiness is initially caused by irritation from
dandruff, but
scratching will increase irritation and lead to
a vicious cycle. Using too many products in
your hair
can irritate
the scalp and lead to more itchiness.There's a wide range of causes.
Dandruff and an inflammatory skin condition called seborrheic dermatitis are the most common causes of
itchy scalp. Seborrheic dermatitis can be the result of stress, seasonal changes, fluctuating hormones, or an overgrowth of yeast on the skin.