You see, having a fear of getting ill drudges up a good deal of anxiety. So this worry and fear can consequently make you feel ill, which only further ignites the issue. Really the fear goes much deeper than just the possibility of getting sick. It can affect the way that sufferers feels about being sick as well.
For instance, this phobias worst case scenario is to vomit. The idea of vomiting is what really fuels the anxiety. Should someone already be feeling ill, the idea of potentially vomiting will keep them from doing many things. In some cases this even means driving themselves or being driven somewhere on the premise that should they vomit it could distract who was driving so much that they would get into an accident.
This phobia is typically caused by a traumatic event as a child that happened as a result of being sick. It could even stem from a memorably terrifying event that occurred as a result of someone they knew or cared about being sick when they were growing up.
To seek out treatment for this condition is typically to see a psychiatrist. Most often, they will attempt to have the sufferer confront the fear head on and make peace with the event. This seems to work for many people that have suffered the phobia, although some fears run much more deeply than this.
But, there is a other treatament, apply by yourself, with more information of treatament of emetophobia here.