Elderly people with symptoms of weakness can go to the emergency department, respiratory department, endocrinology department, neurology department or psychiatry department, because there are several possible causes of general weakness in the elderly: 1, alcohol, drugs, poisoning and other factors, such as alcohol poisoning, carbon monoxide poisoning, taking a lot of sleeping pills, etc. In this case, you should urgently go to the emergency department and seek treatment. 2, hypoglycemia, patients due to hunger or excessive consumption of hypoglycemia can manifest as general weakness, dizziness, sweating and other symptoms. 3. Infections, such as viral colds or pneumonia, can cause fever, weakness, body aches and pains in the elderly. 4, Patients with somatization disorders, such as anxiety and depression, can show weakness, listlessness and low concentration. Therefore, elderly people who have symptoms of weakness can go to the above departments to find out the cause and seek solutions.