Spring is here and everything is coming back. Take off your hat and let your hair take a deep breath, too. At this point, the problem came, hair strands, shiny, itchy scalp, gently scratched, found some small bumps on the scalp, a little bit of pain, hard to scratch will appear a little white pus and a small amount of red blood, and then pull the hair, can also fall off a few hair to. At this point, one has to realize that there is a problem with the scalp. What exactly is the problem? This is the common seborrheic dermatitis combined with seborrheic alopecia. How to prevent and treat seborrheic dermatitis and seborrheic alopecia? First of all, the diet is mainly light, should often eat food rich in b vitamins and protein, such as eggs, milk, lean pork, beef, chicken, duck, peanuts, soybeans, soy products and fresh vegetables, fruits, etc.. Avoid high-calorie or stimulating foods, such as fried foods, chili peppers, cigarettes, alcohol, coffee and beef containing isomorphic proteins, etc. Eat less sugar and animal fats. Secondly, hair should be combed often, or head massage, the purpose is to stimulate the head meridians, promote blood circulation, shampoo to avoid using alkaline strong shampoo, it is best to use a neutral or weak acidic shampoo that does not stimulate the scalp and hair. If your hair is oily, you can wash your hair once a day. Washing your hair in the morning is better than washing your hair at night because the secretion of head oil is relatively high at night. If the hair is not very oily, you can wash your hair once every two or three days. After shampooing, apply selenium disulfide lotion to the roots of the hair and keep it for 5-10 minutes, then rinse it off with water to effectively inhibit the secretion of head oil. Do not perm your hair as much as possible. Once again, the routine should be regular, early to bed, early to rise, sleep enough, reduce psychological stress, which can effectively reduce the secretion of sebaceous glands. Finally, if necessary, you can combine medication, such as oral vitamin B6 tablets, spironolactone tablets, cimetidine, etc. After the above treatment, if the symptoms are still not relieved, it is recommended to go to the hospital to avoid delaying the diagnosis and treatment.