Familial or Sporadic Hemiplegic Migraine is related to migraine, familial hemiplegic, 2 and familial hemiplegic migraine. An important gene associated with Familial or Sporadic Hemiplegic Migraine is ATP1A2 (ATPase Na+/K+ Transporting Subunit Alpha 2), and among its related pathways/superpathways is Synaptic vesicle pathway. Affiliated tissues include tongue and brain, and related phenotypes are eeg abnormality and muscle weakness