What is the cause of chest tightness, dizziness and nausea recently

Chest tightness, dizziness, nausea may be caused by gastrointestinal cold, may also be caused by food poisoning, acute gastroenteritis, but also do not rule out hypertension, intracranial infection and other reasons, need to go to the hospital as soon as possible to do blood routine and blood pressure examination, confirm the specific cause, according to the cause of treatment.