Convivophobia

Simbosiophobia, also called giortiphobia is a fear of party. This fear, like most other fears, usually traces back to the early childhood, the age group when they're involved in parties often. Sufferers of this fear would refuse to go to or get involved in parties; if it is throwing a party in the sufferer's home, simbosiophobes would want to be confined to the bedroom or leave the residence.

Symptoms include nausea, slow breathing, feeling helpless, and feeling trapped. It is most often treated by having sufferers to gradually get involved with more and more guests until it reaches the average number of invitees.