Thin people with diabetes may not have obvious clinical manifestations in the early stage, and some patients may have symptoms such as excessive drinking, excessive eating, excessive urination, etc. It is recommended to consult a doctor. Diabetes mellitus and thin patients in the early stage may not have obvious clinical manifestations, often through blood glucose tests or physical examination by chance, some patients with diabetes may also have symptoms such as polydipsia, polyphagia, polyuria and weight loss. Patients with type 1 diabetes may also experience acute complications of diabetes such as diabetic ketoacidosis as their first symptom, while patients with type 2 diabetes may experience a combination of dyslipidemia and blood pressure abnormalities. Patients with suspected diabetes symptoms or abnormal blood glucose values are advised to visit a hospital and ask their doctor to make a judgment.