AQP4 and myeloid sarcoma: Mean t-MFIS score was 35.100 ± 18.680 and, although the differences were not significant, MS patients tended to have higher c-MFIS scores, while AQP4-NMOSD and MS presented with higher p-MFIS scores, and MOGAD appeared to be slightly less affected by fatigue compared the other two groups.