During the Edo period, the word 'Hayabusa' (meaning 'falcon') became corrupted to 'Hayakusa' (with 'kusa' meaning a type of skin disease) and it came to be believed that the shrine had the ability to cure such ailments.
江戸時代には隼は訛って「ハヤクサ」と読まれ、そこから瘡（くさ。皮膚病の一種）の平癒に霊験ありとされるようになった。