Really? So nobody trips over anything or slips on anything? Nobody on the planet misses their chair when they go to sit down or just loses their balance because they have an abnormal gait?
Now that you mentioned it...
Why do they have an abnormal gait?
What meds are they taking that may affect their balance?
What other medical conditions that affect their balance?
What electrolyte imbalances cause dizziness?
What cardiac conditions can cause momentary weakness or dizziness?
What medical conditions can cause sudden changes in BP?
Geriactric medicine is very complex which is why it is a medical specialty.