Conversation: The conversation between human and AI assistant.
[|Human|] A friend is going through diagnostic tests to determine what may be his problem -- he is extremely fatigued, is experiencing problems walking (tripping at times)  and his speech is continually getting slurred.   drs. have ruled out MS, Parkinsons, and strokes.  He had a sleep apnea test last night.   his MRI came back looking good.  What else could they be looking at?
[|AI|]  Hi, Difficulty in walking with tripping episodes and slurred speech other possibility to be considered once MS, Parkinson disease and stroke are ruled out and MRI brain normal needs to rule out motor neuron disease (ALS) where both URN and LMN affected, and MRI brain can be normal You Need to consult neurologist for neurological examination and detailed history and evaluation is needed for further confirming the diseaseRegards Chat Doctor.