Refractory cytopenias with unilineage dysplasia (RCUD) is a frequent low-risk subtype of myelodysplastic syndrome (MDS; see this term) characterized by refractory cytopenias associated with dysplasia limited to one cell lineage.

A detrimental reaction to the presence of gluten in food, which may include abdominal pain, fatigue, headaches and paresthesia, or celiac disease.