Scalp itch can have a number of causes, ranging from the natural process of aging to the use of harsh hair products. Some disorders can be treated with medication, while others might require preventive measures. Whatever the cause, it's a good idea to see a dermatologist early to prevent complications, according to the American Academy of Dermatology.
Aging
Hair growth and oil production naturally slow with age, which is why many elderly people have itchy scalps. Cold weather can exacerbate the itch, according to the American Academy of Dermatology. Moisturizers that contain petrolatum can alleviate scalp itch. Severe flaking should be monitored by a doctor, because it could be sign of a more serious condition.
Hair Products
Hair color, permanents and relaxers can dry the hair and lead to scalp itch and scaling. Constant use of these products damages the hair follicles and causes breakage. Hot oil treatments and deep conditioning can relieve the dryness. Discontinuing use of colors, permanents and relaxers is recommended.
Medical Conditions
Some conditions that cause scalp itch can be treated medically. Tinea capitis, also called ringworm, can be treated topically or orally with imidazoles or allylamines, according to the American Academy of Family Physicians. Scalp psoriasis can be treated with antimicrobial ointments. Oral medications including retinoids, cyclosporin and methotrexates can treat psoriasis on the scalp, as well as the rest of the body.
Skin Disorders
Some disorders found on the scalp are often are present on other parts of the body, as well. Among them are psoriasis and dermatitis. Seborrheic dermatitis can cause dandruff. Dandruff can be treated with over-the-counter medicated shampoos that contain salicylic acid or ketoconazole, according to the Mayo Clinic. Ointments or gels with vitamin D, corticosteroids or tar can also address scalp disorders.
Complications
Excessively dry skin on the scalp and the rest of the body can cause irritability and sleep problems and also be a symptom of another disorder, such as diabetes or kidney disease. Continued scratching can break open the skin and lead to infections.
