If you have been diagnosed with migraines, it is important to know when to seek emergency care. You should go to the emergency room if you experience a sudden onset of a different or more severe migraine, neck stiffness, a high fever over 38°C, neurological symptoms like confusion, vision or speech problems, numbness or tingling, or if your symptoms do not improve with usual treatment or worsen. It is important to recognize these signs and seek medical attention promptly if you experience them.