A sudden, tightening or cramping of a muscle or group of muscles. Spasms in the esophagus (i-SOF-uh-gus) can occur with PNH. The esophagus connects the mouth to the stomach.
AAMDSIF Awareness Week
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Aplastic Anemia Myelodysplastic Syndromes (MDS) Paroxysmal Nocturnal Hemoglobinuria (PNH) Donate
