There are many causes of fever, vomiting, dizziness and weakness: 1. If fever, vomiting, dizziness and weakness are present, they may be caused by a cold. 2. If fever, vomiting, dizziness and weakness are present for a long time, they may be caused by intracranial infection. 3. If fever, vomiting, dizziness and weakness are present, they may be related to acute gastritis and gastrointestinal colds caused by unclean diet. 4. Peripheral neuropathy, such as Guillain-Barré syndrome. Often patients have a history of antecedent colds, followed by gradual appearance of weakness and numbness in the limbs. Usually pay attention to rest, eat lightly, promptly identify the cause, active medication, because there are many causes of fever, vomiting, dizziness, weakness symptoms, when the symptoms appear to go to the hospital for examination, under the guidance of doctors for treatment.