What is the cause of dry seborrheic dermatitis on the scalp?

The occurrence of dry seborrheic dermatitis on the head may be closely related to the disorder of gonadal secretion. In addition, long-term mental stress, excessive fatigue, and digestive dysfunction may also cause the occurrence of these seborrheic dermatitis.

1. Causes of seborrheic dermatitis

The cause of dry seborrheic dermatitis is still unclear, but it is generally believed to be related to gonadal secretion disorders and caused by hypersecretion of androgens. In addition, it is related to digestive dysfunction, excessive sugar and fat intake, mental stress, excessive fatigue, bacterial infection, and vitamin B deficiency.

Through years of clinical research, it is believed that the occurrence of dry seborrheic dermatitis is related to insufficient kidney yin, excessive movement of yang fire, or upward rushing of blood heat from the lungs and stomach, which prevents the flow of heat and toxicity and causes local metabolism and blood microcirculation disorders. Secondary symptoms include rash, papules or plaques and greasy scales.

2. Clinical features of seborrheic dermatitis

Dry seborrheic dermatitis is more common in young and middle-aged people, and is prone to occur in areas with more sebaceous glands, such as the head, face, behind the ears, armpits, chest, between the shoulder blades, groin, perineum, etc., and can also spread throughout the body. The initial rash of dry seborrheic dermatitis is red papules or plaques that merge with each other and are covered with greasy scales or yellow crusts.

Because dry seborrheic dermatitis occurs in different parts of the body, the symptoms vary. For example, if the head is damaged, severe cases may be accompanied by exudation and crusting, and have a bad odor, which can cause hair loss on the top of the head, which is called seborrheic alopecia. Grayish white scales or yellow crusts are seen on the eyebrows, wings of the nose, and behind the ears, with a flushed base. Irregular yellow-red or light red patches are seen on the trunk, with bran-like scales. In severe cases, dry seborrheic dermatitis can develop into erythroderma all over the body. Sometimes scratching may lead to secondary infections such as folliculitis, furuncle, and lymphadenitis.

3. Treatment of seborrheic dermatitis

Treatment of dry seborrheic dermatitis focuses on keeping the skin clean, limiting fat in the diet, and using medication as appropriate.

1. Limit fatty foods and sweets, such as fatty meat, cream cakes, chocolate, etc., and eat more vegetables and fruits.

2. Wash your face every night with warm water and a small amount of sulfur soap or boric acid soap. Removes oil from the face and cleanses the skin.

3. Follow the doctor's instructions and use medication for treatment, and be patient and persistent to be effective.

4. For dry seborrheic dermatitis, it is important to eat foods rich in vitamins, especially foods rich in vitamin A, such as pork liver, carrots, egg yolks, etc., to correct abnormal keratinization of hair follicles and prevent blockage of hair follicles.