The book "An Account of a Sore Throat, Accompanied by Ulcers. A Disease Which Appeared of Late Years in This City and in Various Parts of the Country" by John Fothergill, is an important document on a rare disease that afflicted England in the 18th century. The book contains a detailed description of the symptoms, treatment and complications of this disease, which prevailed among the population at that time. John Fothergill, a famous physician and researcher of his era, provided valuable clinical observations that helped to better understand this dangerous disease. The work reflects the medical knowledge and attitude to diseases in the past, and also serves as a source of important historical information about the medicine of the 18th century.