While arthritis itself is not viewed as a complication of Fifth Disease in children, production of red blood cells can become a problem with children who may be susceptible (due to conditions of the immune system,
sickleRed blood cells, multiple sickle cells
Red blood cells, sickle cell
Red blood cells, sickle cells
Sickle cell anemia
Sickle cell anemia - resources
Sickle cell test cell disease, etc.). The tiredness and joint discomfort experienced by your daughter may be such a result. Be sure to have her examined by her pediatrician, who may well want to do some lab work, incl. checking her red blood cell count.