Why Is My Head Itching So Bad? 10 Causes

Some of the most common causes leading to head itching are:

1. Dandruff: Dandruff mainly occurs as a result of the body’s response to yeast overgrowth, resulting in itching and a dry, flaky scalp. It primarily affects the hairy areas of the body. 
   • For mild dandruff, use shampoos containing zinc and selenium. 
   • The physician may prescribe topical cortisone and antifungal shampoo in severe dandruff cases.
2. Tinea capitis: Commonly known as ringworm, Tinea capitis is a fungal infection that affects the scalp. Tinea capitis goes deep into the hair follicle resulting in round patches of hair loss. 
   • Because these infections extend deep into hair follicles, physicians may prescribe oral antifungal medications. 
   • However, if the infection is superficial, then over-the-counter antifungals are the solution.
3. Head lice: Head lice can invade anyone’s scalp, not just school children. Poor hygiene does not necessarily result in an infestation of head lice, as it may infest clean hair too. A louse spends most of its life cycle glued to a hair strand. 
   • Shampoos containing permethrin or pyrethrin can treat head lice. 
   • Follow the instructions on the label to get the desired results.
4. Scabies: Mites cause scabies, resulting in intense itching. If it affects the scalp, then the itching may keep you awake all night. 
   • Patients should consult a board-certified dermatologist. The dermatologist prescribes topical creams containing permethrin or crotamiton and sulfur ointments for treating scabies.

Psoriasis is an autoimmune disease that causes itchy scalp. Psoriasis is a chronic autoimmune disorder causing reddish and scaly patches in the skin or scalp. The exact causative factors of this disease are unknown, but psoriasis is not contagious. A family history of psoriasis is a risk factor.

Physicians recommend medicated shampoos containing salicylic acid or coal tar to treat scalp psoriasis. If psoriasis doesn’t respond, topical cortisone is the treatment.

1. Allergic reactions: Allergic reactions to hair care products and hair dyes can cause itchy scalp. 
   • Para-phenylenediamine is an ingredient found in hair dye, which causes an allergic reaction. 
   • Discontinuing the Para-phenylenediamine product is the best solution to treat itchy scalp.
2. Hives: Hives are small red itchy bumps that form in the skin as well as the scalp. 
   • Hives usually resolve on their own; however, hives lasting for more than six weeks are called chronic. 
   • Only chronic hives need treatment, which includes antihistamines.
3. Atopic dermatitis: Atopic dermatitis involves redness and scaling of the scalp, along with a burning sensation and itching.
4. Nerve Problem: If you experience persistent itching without any signs of a rash or other skin disorders, then this could be a sign of a nerve problem. 
   • The nerve damage due to underlying medical conditions, such as diabetes or shingles, can lead to a condition known as neuropathy.
5. Skin Cancer: Basal cell carcinomas (BCC) symptoms include raised reddish patches of skin that may crust or itch, but are usually not painful.