The Materia Medica by Dr. Cyrus Maxwell Boger (1861 – 1935)  was written in 1915 & he was an American homeopath.

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List of all Homeopathic Materia Medica: Dr. Clarke, Boericke, Farrington, Allen, Dunham, N M Choudhury, Nash,  Boger,  Lippe,  Mure,  Tyler,  Constantine Hering, Kent,  Homeopathic Materia Medica, Online Materia Medica

Picricum Acidum

Weak, tired and heavy, in mind and body. Profound anæmia. Easily prostrated. Burning, in many parts; along spine; in legs, etc. Numbness. Formication.

Weak will. Heavy occiput; down spine and in lower limbs. Brain-fag. Headache, < mental exertion, > nose-bleed (Fer-p.). Neurasthenia. Oily burning stool. Ammoniacal, dribbling urine. Priapism, or sexual erethism. Backache with languor; from mental exertion. Writers’ cramp. Aching, legs. Small, painful boils, < nape. Sleepiness.