A method of combating a somatosensory disorder in a subject, comprising administering to the subject an effective amount of a composition comprising bupranolol and/or pharmaceutically acceptable derivative(s) thereof. Compositions useful for such administration are described, including salts, esters, solvates, etc. of tert-butyl[3-(2-chloro-5-methylphenoxy)-2-hydroxypropyl]amine, in which such salt, ester, solvate, etc. compound is in enantiomeric excess or homoenantiomeric in the R isomer thereof, or is formulated with racemic mixtures of the R and S stereoisomers of the salts, esters, solvates, etc. of tert-butyl[3-(2-chloro-5-methylphenoxy)-2-hydroxypropyl]amine. Combination therapy compositions of opioid receptor agonists and such compounds are also described. A method is disclosed of referential genotypic screening of candidate subjects in connection with therapeutic intervention using the compositions of the disclosure to combat the somatosensory disorder.