However, research studies suggest that some antihistamines have anti-inflammatory properties. Other treatments
Coal tar can be effective. Although no significant increased risk of cancer in human treatment with coal tar shampoos has been found, caution is advised since coal tar is carcinogenic in animals, and heavy human occupational exposures do increase cancer risks. Isotretinoin, a sebosuppressive agent, may be used to reduce sebaceous gland activity as a last resort in refractory disease. However, isotretinoin has potentially serious side effects, and few patients with seborrhoeic dermatitis are appropriate candidates for therapy. Keratolytics like topical urea
Metronidazole
Topical 4% nicotinamide

Phototherapy
Another potential option is natural and artificial UV radiation since it can curb the growth of Malassezia yeast. Some recommend photodynamic therapy using UV-A and UV-B laser or red and blue LED light to inhibit the growth of Malassezia fungus and reduce seborrhoeic inflammation. Epidemiology
Seborrhoeic dermatitis affects 1 to 5% of the general population. It is slightly more common in men, but affected women tend to have more severe symptoms. The condition usually recurs throughout a persons lifetime. Seborrhoeic dermatitis can occur in any age group but usually starts at puberty and peaks in incidence at around 40 years of age. It can reportedly affect as many as 31% of older people. Severity is worse in dry climates. Seborrhoeic dermatitis is common in this with alcoholism, between 7 and 11 percent, which is twice the normal expected occurrence. See also
Seborrheic keratosis
Eczema herpeticum, condition that primarily manifests in childhood

References
External links

American Academy of Dermatology: Seborrheic dermatitis
Fibrofolliculomas are 2 to 4 mm in diameter, dome-shaped, yellowish or skin-colored papules usually located on the head, neck, and upper trunk. They are characteristically seen in Birt–Hogg–Dubé syndrome. : 674

See also
List of cutaneous conditions
List of cutaneous neoplasms associated with systemic syndromes
Trichodiscoma


== References ==