Symptoms of brain disorders include disorders of consciousness, cognitive impairment, headache, epileptic seizures and syncope, vertigo, visual disturbances, auditory disturbances, nystagmus, dysarthria, paralysis, myasthenia, . Somatosensory disorders, ataxia, gait abnormalities, involuntary movements, urinary and fecal disorders, intracranial pressure abnormalities and brain herniation, and sleep disorders. 1. Disorders of consciousness: drowsiness, lethargy, coma, and so on. 2. Cognitive disorders: memory loss, aphasia, decreased computational ability, etc. 3. Headache: full or localized headache, dull pain, etc. 4. Epileptic seizure and syncope: brief reversible loss of consciousness. 5. Vertigo: sensations of spinning, tilting and undulating. 6. Visual disturbances: visual disturbances or visual field defects. 7. Hearing impairment: deafness, tinnitus and auditory hypersensitivity. 8. Nystagmus: horizontal nystagmus, vertical nystagmus and rotational nystagmus. 9. Dysarthria: dysarthria and dyspraxia. 10. Paralysis: weakened muscle strength, increased muscle tone, abnormal tendon reflexes, etc. 11. Myasthenia gravis: reduction in the size of skeletal muscle, thinning or even disappearance of muscle fibers. 12. Somatosensory disorders: loss of sensation or abnormalities, such as numbness, pins and needles sensation, ants sensation. 13. Ataxia: disturbances in body balance, posture and gait. 14. Gait abnormality: abnormal form and posture in walking and standing. 15. Involuntary movements: rapid contraction of single or multiple muscles, etc. 16. Urinary and fecal disorders: difficulty in urination, urinary retention, urinary incontinence, constipation, fecal incontinence, etc. 17. Abnormal intracranial pressure and brain herniation: headache, vomiting, optic papilla edema. 18. Sleep disorders: insomnia, etc.