Stomach acid headache may be caused by improper diet, mental stress, taking drugs and other reasons. 1. Improper diet: patients due to irrational eating habits may cause stomach diseases, such as chronic gastritis, gastric ulcer, etc., there may be acid reflux heartburn, epigastric pain, etc. caused by the patient’s lack of energy intake or sleep at night, indirectly caused by headache. 2. Nervousness: when patients are nervous, overworked and emotionally upset, the cerebral cortex is dysfunctional and can’t govern the nerves of gastric acid secretion well, prompting an increase in gastric acid secretion, and excessive nervousness can lead to tense nerves in the head, which can cause a headache. 3. Taking medicines: If patients take medicines for treating stomach acid such as Ranitidine tablets, Famotidine tablets and other medicines with big side effects, headache, dizziness, nausea, constipation and generalized weakness will occur. There are many causes of stomach acid headache, if the patient has the symptoms of stomach acid headache, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor, follow the instructions of the doctor to use medication, identify the cause of the disease, and take the appropriate treatment program.