Causes and symptoms for SBL Belladonna Dilution   Belladonna is a chief remedy for fever, neuralgia and pain. Fever is sudden and violent in onset. Fever is caused due to drought of air, cold wind, uncovering head and exposure to summer sun. There is sudden rise of temperature with red face and throbbing of carotids.  Pulse is strong and quick. There is intense burning heat internally and externally. Sweat only on covered parts and on head. Extremities usually cold during fever.