Thank you for the information. There is usually a well identified trigger for scalp itching - most often this is scalp dryness and scaling as occurs in conditions such as seborrheic dermatitis
and scalp psoriasis or in people with hair thinning or baldness
skin damage by UV radiation in sunlight. Drugs can also cause scalp itching but usually within 4-8 weeks of being started. Contact allergy from hair dye or shampoo is another cause but this usually affects the whole scalp and often has a wet, oozy rash with crusting. Lastly hives can sometimes only occur on the scalp, however these are raised bumps.
You seem to have none of these findings. Which makes me think that you may have neurodermatitis
of the scalp. This is a condition where the nerves in any area of the body become hypersensitive and fire under normal conditions to produce a sensation of itching. The primary problem is itching and any skin rash, redness or excoriation is secondary to the scratching. The skin may look absolutely normal.
This leads to an 'itch scratch cycle'. As in the more one scratches the more the area itches and so on. The first step in treatment is to break this cycle by giving relief from itching and instructing the patient to avoid scratching as much as possible.
For relief from itching what seems to work best in my patients is a steroid lotion like Clobetasol or Fluticasone lotion twice a day for 2 weeks followed by once at night for 4 weeks more. Clobex shampoo can also be used everyday for 2 weeks and then twice a week for a month or so. Tablet Atarax 25 mg three times a day for Claritin 10 mg twice a day should be started alongside and used for as long as required (that is till the itching persists). Your doctor can prescribe these for you. Till you can see him/her I would suggest starting the Claritin and trying Nizoral-AD shampoo alternate days. The shampoo should be lathered and left on the scalp for 5 minutes and then washed off. Follow this with a conditioner of your choice (only on hair, not on scalp). Both of these are available over the counter without a prescription. Oh and yes no blow drying is a good idea.
Please feel free to ask if you have any queries.