Fact sheets Lupus Acromegaly Immune thrombocytopenic purpura Autosomal dominant polycystic kidney disease Castleman disease Fabry disease Cushing syndrome Primary biliary cholangitis Idiopathic inflammatory myopathy Chronic inflammatory demyelinating polyneuropathy See more Testicular regression syndrome on the forum What is the most frustrating or difficult... Erectile dysfunction I have gynecomastia (male breast enlargement) See the forum Testicular regression syndrome