Prayer for recovery from fever

Hazrat Ibn Abbas^ra relates that the Holy Prophet^sa taught him this prayer for fever and various aches and pains:

بِسْمِ اللہِ الْکَبِیْرِ أَعُوذُ بِااللهِ الْعَظِیْمِ مِنْ شَرِّ عِرْقٍ نَعَّارٍ وَ مِنْ شَرِّ حَرِّ النَّارِ

“In the name of Allah, the Most High. We seek refuge in Him, the Greatest, from the evil of every over-active blood vessel. We seek His shelter from the affliction of the heat of the fire.”

(Sunan Ibn Majah, Kitab al-Tib)