The spelling of "a volaticus" is unusual and may be unfamiliar to many readers. The IPA phonetic transcription of the word is /æ vɒˈlætɪkəs/. This word is likely derived from Latin, where "volaticus" means "flying" or "volatile." The use of the letter "a" at the beginning of the word may serve as a prefix or an article, but the exact meaning is unclear without further context. Regardless, the spelling and pronunciation of "a volaticus" are not intuitive, so the word may require explanation or context to be understood.
Wildfire rash, a fugitive miliary eruption, coming and going without apparent cause and without marked general symptoms.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.