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What are the causes of sudden itchy scalp

A 55-year-old female asked:
Dr. Dan Fisher
Internal Medicine 27 years experience
Seb derm: Most usual cause is seborrheic dermatitis - dandruff - although many other causes possible. Could try using over the counter selenium sulfide or zinc... Read More

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A 32-year-old member asked:
Dr. Tsu-Yi Chuang
Dermatology 50 years experience
Seborreic dermatitis: Most likely seborrheic dermatitis.
Dr. Morris Westfried
Dermatology 46 years experience
Psorasis: Psoriasis, seborrheic dermatitis, and hair dye sensitivity can all cause an itchy scalp. If this occurs few days after dying your hair, allergy test t... Read More
Dr. Michael Fisher
Dermatology 32 years experience
Itchy Scalp: Seborrheic dermatitis, also referred to as dandruff or cradle cap in case of children, is one of the most common causes of itchy scalp. Skin condition... Read More
A 31-year-old female asked:
Dr. Joseph Bark
Dermatology 49 years experience
Possible dermatitis: This possible dermatitis could be inching enough to make you scratch it hard enough to produce bruises. On the other hand, there are numerous causes o... Read More
A 42-year-old member asked:
Dr. Shelly Friedman
Dermatology 39 years experience
Not one thing: Cold sores or herpes occur when your immune system is compromised. An itchy scalp is due to dandruff or seborrhea. Stress causes an overproduction of... Read More
A 30-year-old female asked:
Dr. Jay Kashkin
Allergy and Immunology 38 years experience
No: Typically "HIV dermatitis" is not itchy at all and usually located on the upper trunk (chest) and occasionally on the palms and soles. Since people w... Read More
A 35-year-old member asked:
Dr. Joseph Eastern
Dermatology 44 years experience
Could be...: ...Seborrheic dermatitis (which doesn't always cause flaking), or an allergy to a shampoo or conditioner. Or (i know this sounds gross) you could have... Read More
A 24-year-old female asked:
Dr. Kyon Hood
Pediatrics 20 years experience
See a doctor: You should see a doctor. Tinea capitis, ringworm on the scalp, can cause these symptoms and requires a Rx medication. You need to be examined to det... Read More
A 25-year-old female asked:
Dr. Ed Friedlander
Pathology 44 years experience
Serious Rx: Address it as if it were seborrheic dermatitis. A mix of antifungals and judicious use of glucocorticoids may prove sufficient; don't forget old class... Read More
A 51-year-old female asked:
Dr. Michael Fisher
Dermatology 32 years experience
Cyst: Epidermoid cysts are small bumps that develop beneath the skin on your face, neck, trunk and sometimes your genital area. Slow-growing and often pain... Read More
A 48-year-old member asked:
Dr. Shelly Friedman
Dermatology 39 years experience
No: Seborrhea causes itchiness. Shampoo daily with a dandruff shampoo.

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