Chapped hands and feet, refers to the dry and cracked skin of hands and feet due to various reasons, often accompanied by pain, is a kind of hand and foot skin disease we often see in daily life, which can affect life and work in serious cases. In clinical work often encounter this kind of patients, especially the middle-aged and elderly. So, what causes chapped hands and feet, and how do we prevent and treat it. 1, what causes chapped hands and feet to understand the causes of chapped hands and feet, we have to start from the skin structure of the hands and feet, the normal human palmoplantar area skin cuticle thicker and no sebaceous glands, this skin structure on the lack of sebum protection. If the stimulation of external factors, the stratum corneum will become brittle and hard, once the pulling pressure exceeds the normal tolerance limit of the skin can be cracked to cause disease. 2, what triggers will induce hand and foot chaps Common triggering factors are: dryness, friction, trauma, acid and alkaline substances, organic solvents (soap and detergent), fungal infections (such as ringworm), ichthyosis, palm keratosis, hand and foot eczema, etc. 3, what diseases can cause chapped hands and feet 5, ringworm ringworm can also cause painful fissures due to itching and scratching, but ringworm has the following characteristics: (1) often limited to one side of the palm or metatarsal, between the fingers (toes), rarely confined to the heel; (2) the primary damage is papules, blisters; (3) often itchy, rarely painful. Sometimes chafing occurs all year round, not necessarily heavy in winter and light in summer or healed in summer, but sometimes more severe in summer; (4) often complicated with tinea pedis, nail fungus; (5) can often find fungi in the lesions. It should be noted that sometimes tinea capitis can be complicated by tinea pedis, and the two diseases can be causal to each other. According to the survey, the complication rate of 30% to 85%. 6, hand and foot eczema Sometimes hand and foot eczema can cause painful fissures due to itching and scratching, but eczema such as acute or subacute, the primary damage of erythema, papules, blisters, etc., accompanied by itching. If it is chronic, it is often located in the palmoplantar and involves the back of the hands and feet, and is mostly accompanied by thick skin and itchiness, so the two can be distinguished. Hand and foot chaps can coexist with hand and foot eczema, the coexistence rate is about 1.4%. 7, ichthyosis sometimes in ichthyosis based on the more likely to complicate the chapped hands and feet, especially in the cold season when ichthyosis aggravated, the two diseases with the incidence rate of 24% to 47%. 8, palmoplantar keratosis is a congenital disease, starting from early childhood, there are often patients with the same disease in the family, bilateral palmoplantar skin keratinization hypertrophy is significant, because of hyperkeratosis easy to cause cracking. But palmoplantar keratosis does not necessarily form chaps in winter and autumn, sometimes year-round, the incidence of the two diseases is 2.4%. 9, what are the characteristics of the onset of hand and foot cracking hand and foot cracking in the winter and spring low temperature and low humidity season. It often involves the middle-aged and elderly manual workers in the palms of the hands, heels, feet and plantar extremities and other parts of the keratin layer thickened or often rubbed, stretched. 10, how to prevent and treat chapped hands and feet in the prevention and treatment to pay attention to: ① remove various causes and triggers, especially pay attention to reduce the contact of alkaline items such as soap and detergent; ② strengthen skin care, especially skin moisturizing, especially after work or after the water with moisturizing cream; ③ active treatment of coexisting diseases, such as ichthyosis, palmoplantar keratosis, hand and foot eczema, etc. The trouble brought by cracked hands and feet can be big or small, but it will always affect the working life of life, for a better working life, please take action and care more about our hands and feet skin.