First, make a clear check to see if you have unintentional weight loss or if you are on a diet and losing weight. Check specifically when and how many kilograms you have lost weight. If you are not sure, check your weight one month later. Check for appetite and fever. A weight loss of 5% or more of the original body weight in half a year is considered to be clinically important weight loss.

After that, we will distinguish the following diseases.

·Malignant tumor​

·depression

・ Alcoholism

​ ·hyperthyroidism

·Diabetes mellitus

・ Gastrointestinal ulcer

・ Drug property

・ After dementia and cerebral infarction

・ Advanced heart failure, COPD, renal failure

・ Malabsorption syndrome (Crohn's disease, chronic pancreatitis)

・ Adrenal insufficiency

・ Hypercalcemia

​ ·tuberculosis

・ Abscess (liver / kidney / anus circumference)

・ Infective endocarditis

・ HIV

・ Malignant lymphoma

・ Polymyalgia rheumatica

・ Nervous anorexia

For example, to confirm alcohol dependence, screening using the CAGA score is performed. C ut down: one is that you feel must reduce their alcohol intake. A nnoyed by criticism: Have you ever troubled been criticized their alcohol consumption until now to the people around. G uilty feeling: or thought that is not good about his drinking, have you felt the guilt. E ye opener: Have you the the Asazake. If you meet two or more items, you are more likely to be alcoholic.