Butyric acid
A volatile acid obtained chiefly from butter
Boericke, Pocket Manual of Homœopathic Materia Medica, 9th ed., 1927, p. 136
Head
Worries over trifles; impulsive thoughts of suicide; constant state of fear and nervousness. Headache makes him apprehensive about trifles; worse going upstairs or rapid motion. Dull, hazy ache of head.
Stomach
Poor appetite. Much gas in stomach and bowels. Cramps in pit of stomach, worse at night. Stomach feels heavy. and overloaded. Cramp in abdomen below umbilicus. Bowels irregular. Stool accompanied by pain and straining.
Back
Tired feeling and dull pain in small of back, worse walking. Pain in ankles and up back of leg. Pain low down in back and extremities.
Sleep
Pronounced sleeplessness; dreams of serious nature while asleep.
Skin
Perspiration on slight exertion. Profuse, offensive sweat of feet. Crumbling away of finger-nails.
Modalities p. 137
Worse, at night, fast walking, going upstairs.
The book’s Dose section is left out: Samepath quotes the books but gives no dosing advice.