Phobias are far more common than many people realise. It is estimated that more than 11% of the population have some kind of irrational fear.
Generally, the solution is to see that phobia in a different context starting from an objective perspective and then gradually building up exposure from a minimal to comfortable level.
Using hypnosis, this can be done rapidly as the unconscious is able to process information more effectively without the interference of the critical mind. This is known as desensitisation.