A phobia in a dream is read as fear that has fixed itself on a single object. Dream books suggest the thing feared often stands in for something else that is harder to name.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.