The symptoms of a silent migraine typically mimic those of a migraine without headache pain, and they may include emotional shifts, vision changes, language difficulties, diarrhea and thirst, according to WebMD. Symptoms fall into physical, emotional and mental categories as well as the aura phase.
Physical symptoms associated with silent migraines include nausea, vomiting, loss of appetite, cravings, thirst, fatigue, chills and an increase in urination, as listed by WebMD. These symptoms tend to occur during the prodrome phase, which warns of an impending migraine up to 24 hours before it sets in. Mental and emotional symptoms that may accompany a silent migraine include irritability, euphoria and confusion. The symptoms of silent migraines often disturb daily activities, and some of them can be severe.
Approximately 20 percent of migraine sufferers experience the aura phase, a phenomenon whose symptoms include auditory hallucinations, difficulty remembering words, numbness, distortions in taste and smell, and a pins-and-needles sensation, according to WebMD. Visual symptoms that occur during aura, which generally lasts about an hour, include tunnel vision, wavy lines in vision, blind spots, dots in vision and flashing light. To cope with silent migraines, patients should track when symptoms begin and end while noting changes in sleep, stress and eating habits to discover migraine triggers. Patients should consult with a doctor as soon as they experience symptoms to rule out more serious potential causes such as stroke.