What causes an itchy scalp? (Q&A)

(?) Frequently asked questions with answers from the dermatology specialist team at Mesa By Dr. Aor Clinic

Q: What causes an itchy scalp?

A: An itchy scalp can be caused by several factors, such as scalp infections, allergic contact dermatitis from chemicals, inflammatory skin conditions like seborrheic dermatitis, or certain immune-related skin disorders.

One of the most common causes is seborrheic dermatitis.

Q: What is seborrheic dermatitis?

A: Seborrheic dermatitis is a chronic inflammatory skin condition that commonly affects areas with a high density of oil glands, such as the scalp, face, and upper body.

Patients often experience scalp itching along with dandruff or flaky skin, and some may also have red patches on the face or along the hairline.

Q: What causes seborrheic dermatitis?

A: The exact cause is not fully known, but it is believed to result from a combination of factors, including excess skin oil production, a naturally occurring yeast on the skin called Malassezia, and triggering factors such as stress, extreme hot or cold weather, and insufficient sleep.

Q: Is seborrheic dermatitis contagious?

A: No, it is not contagious and is not an infectious disease. You can safely have normal contact and daily interactions with others.

Q: How can it be treated and prevented?

A: Symptoms can be controlled by using medicated shampoos or topical treatments as recommended by a doctor, along with avoiding triggering factors such as stress, lack of sleep, and extreme weather changes.

It is also recommended to use gentle hair and scalp care products with an appropriate pH that does not cause irritation.

Common causes of an itchy scalp

• Dry or excessively oily scalp
• Allergic reactions or irritation from shampoos or hair products
• Fungal or yeast infections on the scalp
• Skin conditions such as seborrheic dermatitis or psoriasis
• Stress and lack of sleep

Characteristics of seborrheic dermatitis

• Itchy scalp with dandruff or flaking
• Red patches along the hairline or face
• Chronic, recurrent flare-ups

Triggering factors

• Stress
• Extreme hot or cold weather
• Insufficient sleep
• Use of irritating hair products

Basic care guidelines

• Use gentle shampoos or medicated shampoos as advised by a doctor
• Avoid scratching the scalp aggressively
• Reduce stress and get adequate rest
• Avoid products that may cause irritation

When to see a doctor

• Persistent or severe itching
• Widespread rash or thick scaling
• No improvement after using regular shampoos