What causes dermatitis? What causes seborrheic dermatitis?

There are many types of dermatitis, the most common one is seborrheic dermatitis. Seborrheic dermatitis is a chronic inflammation of the hair follicles of the skin. The most common manifestations are papules, blackheads and acne, which have a great impact on beauty. Common causes of seborrheic dermatitis include endocrine disorders, bad living habits, etc.

1. Lipodystrophy is a chronic inflammation caused by excessive sebum secretion. Sebum causes inflammation by breaking down free fatty acids into which non-pathogenic bacteria on the skin release.

2. Endocrine disorders

Due to endocrine disorders, sebum secretion increases and its chemical composition changes, the inhibitory effect of bacteria decreases. For example, increased androgen in the body causes an imbalance in the flora on the skin surface, causing the normal flora on the skin surface, such as Staphylococcus aureus, Malassezia pityriasis and Streptococcus, to multiply in large numbers, invade the skin and cause disease.

3. Bad habits and bad living habits

Often staying up late, not paying attention to personal hygiene, and not cleaning the skin in time will lead to long-term accumulation of sweat and fat on the skin surface, causing corruption and decomposition, providing a breeding environment for bacteria, which in turn causes infection and leads to seborrheic dermatitis.

Bad eating habits, frequent consumption of high-fat or overly irritating foods, lack of vitamin B1 in the diet, alcoholism, etc. can all induce or aggravate seborrheic dermatitis.

4. Disease factors

When patients have acne, they may be infected with Corynebacterium, which can decompose fatty acids to irritate the skin and aggravate the infection; or Oval bacteria may grow and multiply in large numbers and invade normal skin, leading to seborrheic dermatitis.

5. Other factors such as adverse external stimuli, such as frequent scratching, friction, use of alkaline detergents and various physical and chemical factors; excessive mental stress; genetic factors, etc., can aggravate the onset of seborrheic dermatitis.