There are many clinical causes of headache, nausea and sweating, such as hypoglycemia, blood pressure abnormalities, cerebrovascular diseases, intracranial occupying lesions, cervical spondylosis, Meniere’s syndrome, psychological diseases, etc. Among them, hypoglycemia is the most common: 1. or too low can appear headache and dizziness, blurred vision, nausea, fatigue, lack of concentration, etc., sometimes accompanied by symptoms of false sweating. Extreme hypotension may lead to syncope, falls, and transient cerebral ischemia; 3, cerebrovascular diseases: such as cerebral hemorrhage, cerebral blood supply deficiency and other diseases can cause plant nervous disorders, manifesting as dizziness and headache, nausea and vomiting, general weakness, sweating, etc., and in severe cases, consciousness impairment and cognitive impairment; 4, intracranial occupying lesions: intracranial tumors, intracranial hematomas and brain abscesses are common, which can manifest intracranial High pressure, symptoms are mainly headache, vomiting, sweating, optic papillary edema, and in severe cases, seizures and brain herniation. 5. cervical spondylosis: patients with sympathetic cervical spondylosis often have dizziness, headache, nausea and vomiting, sweating, memory loss, and difficulty concentrating. Patients with vertebral artery cervical spondylosis may have episodes of vertigo, diplopia with nystagmus, sometimes accompanied by nausea, vomiting, tinnitus or hearing loss; 6, Meniere’s syndrome: dizziness and headache, nausea and vomiting, pale face, sweating and other symptoms often appear during the attack, and often feel that the surrounding objects or themselves are constantly rotating, and in severe cases can fall suddenly and fall; 7, mental illness: if the discomfort persists for a long time, perfect examination does not If no obvious organic lesions are found, it is necessary to consider somatoform disorders caused by anxiety, depression, insomnia, emotional stress and other psychological diseases. In addition, lesions such as cardiac arrhythmia, aortic coarctation, meningitis, infective endocarditis, etc. can also show headache, nausea and sweating, so there are more diseases that trigger the corresponding symptoms, and medical consultation should be sought promptly.