An itchy scalp usually results from a condition called seborrheic dermatitis. The condition is not medically threatening, but can be uncomfortable and cause discomforting side effects such as dandruff. According to MedlinePlus, seborrheic dermatitis is an inflammatory disorder that creates yellow or white flaky scales and itchiness on the scalp and inside the ears. The condition typically responds to medicated shampoos and conditioners.
Causes
Seborrheic dermatitis tends to run in families and often remains dormant until it's exacerbated by stress, extreme weather conditions or fatigue. If you don't wash your hair frequently enough, you may undergo a breakout of the itchy flakes. When oil builds up on the scalp, it can become inflamed and set off your condition. Obesity and acne often are associated with the scalp condition.
Treatment
Over-the-counter shampoos and conditioners that contain coal tar, zinc, selenium, and salicylic acid usually relieve the itching and scaling. Medicated products usually targeted for dandruff treatment should be applied to your wet head. Rub in the conditioner and leave it set for at least five minutes before rinsing. According to the American Academy of Family Physicians, you should use the medicated treatments every day until the dermatitis recedes, then continue to use it two or three times a week to prevent further outbreaks.
Child Care
Seborrheic dermatitis in babies is called cradle cap. Like the adult version, the condition is not contagious, reports MedlinePlus. On the other hand, cradle cap usually is not itchy, but can be uncomfortable when the flakes become crusty on your baby's head. Continue to use mild baby conditioners, gently rubbing the product into your baby's head to loosen the crustiness. You also can use warm washcloths and mineral oil to wrap your baby's head and loosen the crusty patches.
Warning
Using lotions or conditioners that contain alcohol dry out the skin and can cause itchiness and flakes, according to MedlinePlus. If the itching begins immediately following application of a new conditioner or shampoo, you may have an allergic reaction to the ingredients that cause the itchiness. A medical professional should see any persistent itching that does not respond to medicated conditioning treatments or that does not decrease when you change products. Additionally, if you have any pus or fluid draining from the itchy spots, you should see a physician.
