GJB1 and Mitochondrial encephalopathy: In these cases, CMTX1 should be distinguished from other episodic neurological diseases, including transient ischemic attack (TIA), mitochondrial encephalopathy with lactic acidosis and stroke‐like episodes (MELAS), acute disseminated encephalomyelitis (ADEM), and adrenoleukodystrophy (ALD).71, 72, 73, 74