An itchy scalp can result from conditions that range from mild dandruff to severe infections of the skin. Treatments can be as simple as changing shampoo or either increasing or reducing the frequency of washing your hair. Severe cases of itchy scalp may require a visit to the doctor for a prescription of antibiotics.
Mild Conditions
Dandruff, or seborrheic dermatitis, appears as pale, thin, greasy flakes of dead skin in the hair and can cause an itchy rash on the scalp. Dead skin cells can remain on the scalp if you wash your hair infrequently. Individuals whose scalp secretes excessive amounts of oil, or sebum, may be more susceptible than others to suffer from dandruff.
Excessive hair washing using hot water and harsh shampoos can dry the skin of your scalp and cause persistent itching, according to Healthy Hype. Using a hair dryer too close to your head can also dry the scalp.
Skin Infections
Scalp ringworm, or tinea capitis, is a contagious skin condition resulting from several types of fungi. Symptoms of scalp ringworm include bald patches of broken hairs, patches of scaly skin, or small red pimples. Severe scalp ringworm causes large areas of pus and swelling on the scalp as well as enlarged lymph nodes on the neck, according to Health Hype.
Folliculitis is the result of a bacterial infection or inflammation of the follicle and appears as several pimples or scabs near the follicle. Acne keloidalis nuchae, or hair bumps, can also appear on the back of the head, according to Skin Sight.
Head Lice
Head lice, or pediculosis capitis, is a contagious skin condition that often appears in children. The eggs, or nits, of head lice stick to the hair shaft in areas behind the ears and at the back of the neck, resulting in an intense itching sensation, according to Health Hype.
Psoriasis
Psoriasis occurs mostly on the back of the head. Symptoms include red or yellowish patches or scaling on the scalp as well as on the ears. Psoriasis can be a lifelong skin condition, according to Skin Sight.
Treatments
Treatment for folliculitis includes over-the-counter antibacterial shampoos. Severe cases of folliculitis may require oral antibiotics. Scalp ringworm can require treatment in the form of oral medications such as griseofulvin or terbinafine, according to Health Hype. Treatment for psoriasis can include anti-dandruff shampoos, coconut oil ointment or ultraviolet light phototherapy, according to Health Hype.
