Geliophobia
Geliophobia - Fear of laughter.
Geliophobia may be a serious phobia, but it is treatable. The fear of laughter can often be treated with psychotherapy, hypnotherapy or by trying to find the underlying cause.
Often is the case with Geliophobia is that that there was some sort of traumatic event in the patient's life that caused this fear of laughter, with a little therapy or by hitting the fear head on, this can often be cured.
Geliophobia has been know to ruin people's lives. Living with the fear of laughter is often very difficult, but with time, it can be possible.