Dizziness is an ailment that happens to all of us. If they occur very occasionally (e.g. when getting out of bed quickly) there is no reason for concern.
Ageing is an irreversible process and is associated with a decrease in the body's ability to respond to so-called environmental stresses. It affects every organism and occurs naturally over time.
Getting a diagnosis that a loved one has Parkinson's disease completely changes life and normal functioning in most cases.