<s>[INST] I m 29 yrs old. I been having a double blurred vision for past 4 years now, with a numbness on my left side of tongue, both symptoms tongue numbness n double blurred vision starts at the same time n it lasts up to 3 minutes, then a bad headache and feeling of nausea starts after that, I m worried. I need the answer please and thank you [/INST] Hi, You need to see a neurologist for a full and complete workup, but you may be suffering either from some type of seizure disorder, sudden restriction of blood flow to the brain stem or these could be aura symptoms to ocular migraines.  Otherwise, look up a local friendly neurologist or even headache specialist.  They will work you up and get some concrete answers for you. I agree that you need to get to the bottom of this...very important. Hope I have answered your query. Let me know if I can assist you further.  </s>