How to know if i have wernickes if i may have liver or brain malfunctions?

Check thiamine level: Tremor, impaired eye movements (ocular apraxia) , limb ataxia can be due to low thiamine. Often seen along with Korsakov's Psychosis (confabulation disorientation). Draw a thiamine level and then take lots of thiamine. The problem should quickly resolve if its Wernckes. I see about one case every 6 months. Usually people who are drinking a lot and not eating much.