Blacktongue

Blacktongue, also known as blacktongue fever, was a well-known disease in Faerûn, and was one of the so-called Five Fevers.

Acquisition
Blacktongue was transmissible through ingesting the disease. Symptoms manifested within four days.

Effects
Sufferers of blacktongue experienced fever and a steady loss of their mobility and reflexes. While a healthy individual could fight off the disease in a matter of days, blacktongue could ultimately be fatal as the sufferer's tongue turned black and swelled to fill their mouth.

History
Ilisar, the Waterdhavian tailor for whom Ilisar's Alley was named, died of blacktongue.