It is characterized by the presence of plaques or scaly bumps (which can be dry or oily), intense itching and redness of the skin.
Seborrhea can develop at any age and both sexes. May occur especially in the scalp, face, eyebrows, chin, armpits and chest, but can also occur in other areas of the body.
There are several types of the most common seborrhea seborrhea fluent (characterized by its brilliance and humidity), seborrhea irritable, pubertal and oily scalp.
When attacking the area of the scalp, seborrhea causes the hair has a shiny, greasy, sticky, heavy and dirty. Even because the fat oxidation may experience, is likely to be a bad smell.
The person with this type of seborrhea constantly tries to wash her hair (even several times a day) to seek to remove excess fat, not knowing that can worsen the disorder because it is stimulating the activity of sebaceous glands, to find clean the hair follicle produces more sebum which causes a vicious circle.
Although it is unclear what causes seborrhea, relates to the following factors:
* Stress and anxiety (destroy the balance of sebum on the scalp)
* Excessive alcohol consumption
* Food with excess fat
* Increased male sex hormones
* Nutritional deficiencies (particularly the absence of biotin and vitamin A)
* Unusual or excessive washing hair
* Oily skin
* Skin problems like acne, rosacea and psoriasis