Collapsing from heat is read as overexposure — too much attention, too much pressure or too much passion without any shade to recover in.
When this appeared in your dream, what were you feeling?
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.