Fact sheets Lupus Acromegaly Immune thrombocytopenic purpura Primary biliary cholangitis Autosomal dominant polycystic kidney disease Castleman disease Chronic inflammatory demyelinating polyneuropathy Fabry disease Cushing syndrome Bullous pemphigoid See more Isolated Klippel-Feil syndrome on the forum What is the most frustrating or difficult... See the forum Isolated Klippel-Feil syndrome