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Seborrhea Dermatitis

Seborrhea patches at the inner eyebrows. GFW

Seborrhea patches at the inner eyebrows. GFW

What Is Seborrhea Dermatitis?

Seborrhea dermatitis is a recurring inflammatory disorder of sebaceous glands characterized by scaly patches of skin, often with bumps.

Seborrhea dermatitis results from the body’s inflammatory reaction to invasion by pityrosporum yeast that naturally inhabits the scalp and skin.1 Inflammation is the normal response to tissue injury and germ invasion.

Pityrosporum is a yeast that is commonly present worldwide. Its development depends on various factors that predispose to pityriasis versicolor, a chronic and mild superficial yeast infection. These infections usually are asymptomatic without itching or pain and without cellular and/or antibody responses.2

Q: Why are the sebaceous glands particularly affected by this yeast?

A: Pityrosporum yeast is an organism that needs oil produced by sebaceous glands to grow. If conditions permit, this yeast invades the superficial layer of skin and hair shafts to reproduce, causing infection. Such conditions include weakened skin due to nutritional deficiencies, excessive build-up of oil on skin, and altered immunity due to systemic disease such as psoriasis.

In adults, areas of skin that are the most affected have the greatest number of sebaceous glands especially the scalp, back, underarms, and the face including the eyelids, eyebrows and side folds of the nose.

All ages are subject to seborrhea dermatitis, and males have a higher occurence than females.

What Is Seborrhea In Celiac Disease and/or Gluten Sensitivity?


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  1. Krause’s Food, Nutrition, & Diet Therapy. 10th Edition. Kathleen Mahan, Sylvia Escott-Stump. 2000. W.B. Saunders Company. []
  2. Zarei-Mahmoudabadi A, Zarrin.  M, Mehdinezhad F. Seborrheic dermatitis due to Malassezia species in Ahvaz, Iran. Iran J Microbiol. 2013 Sep;5(3):268-71. []