Fact sheets Lupus Acromegaly Idiopathic inflammatory myopathy Bullous pemphigoid Castleman disease CDKL5 syndrome Warm autoimmune haemolytic anaemia Chronic inflammatory demyelinating polyneuropathy Neurofibromatosis Primary biliary cholangitis See more Methylmalonic acidemia on the forum Severe B12 deficiency and malabsorption Difficult Diagnosis Addisons Disease- Primary Adrenal... How were you diagnosed with a rare disease? Living with obesity: On a daily basis,... Living with Usher syndrome: Share your... See the forum Methylmalonic acidemia