Pain in or around the coccyx; another spelling of coccygodynia.
From Greek 'kokkyx' (coccyx) plus 'odyne' (pain) with the '-ia' suffix. This is an alternative spelling that drops the 'g' for easier pronunciation.
Different spellings of medical terms exist because they evolved in different languages and time periods—coccyodynia is just the simpler version of coccygodynia, and both are correct!
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