Thanks for writing in.
Itching can occur in seborrheic dermatitis
of the scalp.It gets aggravated by cold winter season.
It can also occur due to minoxidil
You can use minoxidil in foam form.Mintop foam is available in market.
For itching in scalp you can start using antihistamnic like tab Cetzine.Also you can apply zydip lotion over scalp.
Discuss the option of minoxidil in foam formulation with your dermatologist
.It will have rapid effect. Will reduce the hair fall
and itching effectively.
Hope this helps.