Various underlying conditions can cause an itchy scalp without dandruff. Examples include head lice, hives, and dermatitis. The scalp may also be sore, dry, or tender. Treatment can depend on the cause.

Scalp pruritus, or an itchy scalp, is a common health issue that many people experience. In many cases, dandruff may cause scalp itchiness. However, many different conditions may cause a person’s scalp to itch.

This article discusses some possible causes of scalp pruritus, their treatments, and when to contact a doctor.

A person with long hair scratches their itchy scalpShare on Pinterest
AndreyPopov/Getty Images

Contact dermatitis is an itchy rash that occurs after a person has direct contact with an allergen. This reaction may appear on the scalp if an individual is allergic to a hair product such as hair dye, shampoo, or conditioner.

Symptoms

Symptoms of contact dermatitis may include:

Treatment

The treatment options for contact dermatitis may depend on the cause of the reaction. Some common treatments include:

A person should talk with a healthcare professional to identify which treatment option may work best for them.

Atopic dermatitis, which some people refer to as eczema, is a chronic disease that affects the skin and causes inflammation and discomfort. It typically begins in childhood, though a person may develop the condition later in life.

Symptoms

Symptoms of atopic dermatitis include:

Treatment

Atopic dermatitis treatment may include medications, topical treatments, and lifestyle modifications, such as:

A person should talk with a healthcare professional to identify which treatment option may work best for them.

Head lice are insects that spread through close head-to-head contact. They only affect humans, feeding on blood and keeping close to the scalp for warmth.

Symptoms

An individual who has head lice may experience the following symptoms:

Treatment

There are several over-the-counter (OTC) and prescription medication options to treat head lice, including:

  • pyrethrins
  • permethrin lotion
  • benzyl alcohol lotion
  • spinosad topical suspension
  • topical ivermectin lotion

A person should talk with a healthcare professional to identify which treatment option may work best for them.

Learn about how head lice look.

Hives, which doctors may call urticaria, are skin-colored or discolored bumps that appear on the skin. They are typically the result of an allergic reaction.

Symptoms

Symptoms of hives may include:

  • raised and bumpy patches of skin
  • discoloration
  • itchiness
  • blanching, which means the center of a hive turns white when a person puts pressure on it

Treatment

Hives typically resolve on their own. However, some treatment options may include:

A person should talk with a healthcare professional to identify which treatment option may work best for them.

Learn about how long hives can last.

Scabies is the result of a human mite infestation. The mite burrows into the upper layer of the skin, where it lives and lays eggs.

Symptoms

The symptoms of scabies include:

  • itchiness, particularly at night
  • rash
  • sores
  • thick crusts on the skin

Treatment

Treatment options for scabies include:

  • permethrin cream
  • crotamiton cream or lotion
  • benzyl benzoate lotion
  • sulfur ointment
  • lindane lotion
  • spinosad liquid

A person should talk with a healthcare professional to identify which treatment option may work best for them.

Learn about scabies causes and prevention.

Psoriasis is an autoimmune disease that speeds up the growth cycle of a person’s skin cells.

Symptoms

Symptoms of psoriasis may include:

Treatment

The goal of psoriasis treatment is to help relieve symptoms. Treatment may include:

  • salicylic acid
  • TCIs
  • synthetic vitamin D
  • roflumilast cream
  • tazarotene
  • corticosteroids
  • oral JAK inhibitors
  • acitretin
  • biologic medications
  • apremilast
  • light therapy

A person should talk with a healthcare professional to identify which treatment option may work best for them.

Learn more about scalp psoriasis.

A fungus causes the skin infection that people refer to as ringworm.

Symptoms

The symptoms of ringworm may include:

Treatment

The treatment of ringworm may differ depending on the location. Treatment options include both OTC and prescription antifungal medications, which may include:

A person should talk with a healthcare professional to identify which treatment option may work best for them.

Learn about scalp ringworm here.

In addition to the conditions above, other possible causes of an itchy scalp may include:

An individual should talk with a healthcare professional to find out the cause of their itchy scalp. They may also wish to seek further advice if:

  • symptoms last longer than 6 weeks
  • treatment does not provide relief
  • they experience intense itching and discomfort
  • they develop painful sores
  • they experience hair loss

In addition to performing a physical exam and assessing a person’s medical history, a doctor may take a biopsy from a person’s scalp to test for underlying conditions.

An itchy scalp can result from a variety of underlying conditions. People should talk with a healthcare professional to identify the cause of their itchy scalp and receive appropriate treatment for the condition.

A range of treatment options is available to treat causes of an itchy scalp. A doctor will tailor treatments depending on the cause of the person’s itching and may prescribe topical and oral options.