<s>[INST] My fiance just had some sort of attack making her lose her speech mostly and be very confused. She could not focus well either. Her legs became weak and her arms trembled. This is the third time in one week it has happened. It only lasts about half an hour. PLEASE HELP VERY URGENT [/INST] Hi, B12 vitamin deficiency can be a reason. B12 and vitamin D3 levels in blood should be checked. Routine blood investigation also should be done to rule out anemia. If these all clear then neurological examination by a neurologist should be done to rule out any deficits. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr. Nishad BN </s>