A phobic person may panic in response to the phobic stimulus being present. It may involve screaming, crying or ruunnng away. Children may react by freezing, clinging or having tantrums.
Avoidance
Sufferers tend to go to big efforts to avoid coming into contact with phobicstimulus, e.g. people with a fear of public toilets may limit the time they spend outside. This may interfere with work, social life, etc.
Endurance
Sufferer remains in presence of the phobic stimulus but continues to experience high levels of anxiety. May be unavoidable in some situations, e.g. fear of flying.