Atypical migraine symptoms include visual phenomena, vision loss, odd needle sensations in the extremities, speech problems, language problems and possibly even limb weakness, reports Mayo Clinic. Atypical migraines are associated with auras, which are nervous system problems that take place either before the migraine begins or while the migraine is taking place.
The exact cause of aura migraines or atypical migraines is not yet known. Scientists know that brain chemicals are part of the reason, but the interaction is not entirely clear, reports WebMD. People who are overweight are also predisposed to have more migraines with auras. Most patients can recover by resting quietly at home.