What causes numbness in the thumb and blurred vision?
Patient: My son, who is 26 yrs. old has developed numbness in his thumb and forefinger as well as pain in the upper part of the same arm. MRI shows no cervical issues or signs of MS and he is now being referred to another Neurologist. He also complains of blurred vision at times. What else can cause these issues? Doctor: Hi,  The numbness in the thumb can be related to mild nerve root compression or irritation. the blurred vision is not likely to be related to this.   Hope I have answered your query. Let me know if I can assist you further.  Regards, Dr. Praveen Tayal, Orthopedic Surgeon