47-year-old female with a diagnosis of Multiple Sclerosis ,who suffers from progressive tetraparesis, more pronounced in the lower extremities. Her treatment included mitoxantrone and Interferon-beta treatment, both were discontinued because of side effects. Her movement difficulties, due to the left lower limb rigidity, are increasing progressively.

45-year-old male who presented with acute onset of flaccid paraparesis more pronounced on the left, sensation of current shocks in both legs and sensory level from the umbilicus downwards. The symptoms have reached their pick within less than a day. On examination the left lower limb was plegic and the right lower limb was partially weak. EMG was interpreted as demyelinating sensorimotor neuropathy. MRI showed hyperintense signals at the dorsal terminal segment of the marrow consistent with myelitis.

Child with progressive exotropia secondary to the profound vision loss that appears to be to an optic neuropathy. The expert recommends to obtain additional studies in order to exclude potential diagnosis such as glioma, pathological disc edema, optic nerve drusen or dominant optic atrophy OPA-1 gene related.