Immune-Mediated Encephalomyelitis
Inclusion Body Myositis
Incontinentia Pigmenti
Infantile Hypotonia
Infantile Neuroaxonal Dystrophy
Infantile Phytanic Acid Storage Disease
Infantile Refsum Disease
Infantile Spasms
Inflammatory Myopathies
Iniencephaly
Intestinal Lipodystrophy
Intracranial Cysts
Intracranial Hypertension
Isaacs' Syndrome