Arnica Montana is the first remedy to use for any kind of trauma. Arnica is a homeopathic remedy for bruises, boils, jet lag. More uses for Arnica Montana are for Insomnia, Mental Exhaustion, Tendinitis, Gout, and Headache. Can also be used for old traumas. Person will say "I don't need a doctor", does not want to be touched. It is also used for sprains, bruises, surgery, as well as other conditions. Severe mental stress or shock. Soreness, bruising; feels as if hit by a truck. Modalities:: WORSE least touch, from motion or rest. BETTER lying down.
Source: Boericke Materia Medica