Headache, stomach pain, nausea, weakness and loss of appetite can be caused by gastrointestinal inflammation, improper diet, intracranial tumors, etc. It is recommended to go to the hospital in a timely manner to clarify the cause of the disease and to receive the right treatment. 1. Inflammation of the gastrointestinal tract can be controlled by taking antibiotics such as doxycycline, metronidazole, roxithromycin and other medications; you can also choose to protect the gastric mucosa of the drugs, such as misoprostol, etc.; to inhibit the secretion of gastric acid, such as omeprazole, etc.; to promote the gastrointestinal peristalsis of the drugs, such as Mosapride, to improve the symptoms and relieve discomfort. 2. If the discomfort is caused by improper diet, it is recommended to have a light diet, keep the food clean and hygienic, and have enough rest to relieve the symptoms. 3. If the above symptoms are caused by intracranial tumors, it is necessary to remove the tumors through surgical treatment to cure the disease under the guidance of doctors. Due to the diversity of causes, it is necessary to find out the causes as soon as possible, and actively cooperate with doctors to receive standardized treatment to relieve clinical symptoms, drugs should be used in strict accordance with the doctor’s instructions, and it is recommended to consult a doctor after the emergence of adverse reactions, and drug allergy is prohibited from use.