Many people do not know that there are many bad habits in daily life, which can lead to some skin diseases are getting heavier and heavier, or long untreated. The following are listed: 1, excessive scratching. Itching is the most common clinical symptoms of skin disease, itchy skin will produce the desire to scratch, not scratching at all is unrealistic, but excessive scratching will aggravate the skin disease. Many patients scratch the itchy skin for the sake of momentary pleasure, scratching hard until the skin bleeds. As a result, the more you scratch, the more itchy you scratch, forming a vicious circle. In fact, excessive scratching can lead to the aggravation of many skin diseases, such as neurodermatitis lesions skin gradually rough, hypertrophy; can make the further spread of acute eczema, aggravated exudation; can make flat warts, infectious molluscum contagiosum occur autoinoculation, so that the rash spread development; can make psoriasis and flat moss in scratching the skin on the new rash and so on. So, dermatology patients in the treatment, must control their hands, as far as possible to avoid scratching, itching when the intense can take medicine or coated with medicine to stop itching. 2, hot water scalding. Many patients use hot water to scald the rash for the sake of instant pleasure. Although this can solve the itch for a while, but after the itch will intensify, especially acute eczema and other dermatitis, hot water scalding can make capillary permeability increase, promote the release of allergic substances in large quantities, resulting in exudation and erosion aggravation, making the condition worse. Therefore, even the herbal fumigation and the currently popular sauna bath, for acute eczema and acute dermatitis patients is not suitable. 3, the use of alkaline detergents. Many patients with skin diseases, such as chapped hands eczema patients have the habit of repeatedly using alkaline soap, washing powder or detergent to wash their hands. In fact, these detergents tend to lead to drier skin, making chafing and itching worse. The old pruritus with soap bathing can inhibit sebum secretion, making the skin drier, thus aggravating itching. Therefore, such patients can try the oil-rich soap. 4, poor diet. Some people can eat seafood, dogs, beef and mutton, fish, shrimp, crab, nymphs and various irritating foods, such as eating chili, pepper, garlic, cinnamon, leeks, etc., and induce eczema, urticaria and other allergic skin diseases, or make it worse. Therefore, for allergic people, should avoid spicy and stimulating products, diet should be light, can eat appropriate fruit, multivitamin supplement. 5, abuse of drugs. Drug abuse is a common phenomenon that leads to aggravation of skin diseases. For example, topical corticosteroids are used to treat ringworm, resulting in an increasingly widespread rash. The more you abuse hormonal medication, the more you will be treated, and the bigger you will be treated. Long-term topical use of hormones for seborrheic dermatitis on the face has led to stubborn and difficult-to-treat hormone-dependent dermatitis. Acute vesicular exudative eczema, the abuse of ointment-based preparations, leading to the spread of the rash and exudation aggravation. Therefore, the treatment of skin diseases should first be clearly diagnosed, target the cause, and choose the appropriate topical form of treatment according to the shape of the rash to be effective.