Weight loss refers to weight loss caused by diseases and other factors. Generally, weight loss 10% or more than normal weight is called emaciation. You can see it in the following situations. (1) Normal appetite and weight loss. Weight loss caused by abnormal digestion and absorption function, such as vomiting, diarrhea, parasitic diseases, etc. (2) When the food intake increases, the body weight decreases. Although eating more, but the consumption increases, so as to lose weight, such as hyperthyroidism, diabetes and so on. (3) Loss of appetite, decreased food intake and excessive body catabolism lead to weight loss, such as ① systemic diseases (infection, malignant tumor, hematological diseases), hypofunction of adrenal cortex and hypofunction of anterior pituitary gland; ② Mental factors: depression, anorexia nervosa; ③ Digestive system diseases: chronic gastrointestinal diseases, chronic liver diseases, chronic pancreatic diseases, etc.

(4) Severe trauma and burns, often accompanied by a large amount of plasma exudation, significantly increased consumption of protein;

(5) Some drug reasons, such as thyroid preparations and long-term use of laxatives. Emaciation is characterized by rough and inelastic skin, muscular atrophy, reduced subcutaneous fat and exposed bones. Suffering from emaciation is mostly due to problems with the digestive system. Of course, it is also possible to lose weight when our body is seriously injured again. When our body is in a continuous state and does not improve, we must seize all the time to treat the disease.