This remedy has specific uses in homeopathic medicine.
Primarily it is used for deep, painful bruising. As Arnica is nearly always the first remedy to give for any kind of bruising, Bell p is often used to follow if Arnica does not seem to help very much.
Sometimes it is used after Arnica once the bruising has gone but bumps remain.
Sore, bruised feelings in muscles and bones
Useful after surgery or over-exertion (consider following child-birth)
Illness starts after getting cold when hot (even from ice-cream on a hot day!)
Bruising
Insomnia
Joint problems