title: [Backache is often caused by strained muscles].
mesh_terms: D000631:Aminopyridines / Q000009:adverse effects / Q000627:therapeutic use*; D000700:Analgesics / Q000009:adverse effects / Q000627:therapeutic use*; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects / Q000627:therapeutic use*; D001416:Back Pain / Q000188:drug therapy* / Q000209:etiology*; D003937:Diagnosis, Differential; D006801:Humans; D013180:Sprains and Strains / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy*; D016896:Treatment Outcome
chemical_list: D000631:Aminopyridines; D000700:Analgesics; D000894:Anti-Inflammatory Agents, Non-Steroidal; C034161:flupirtine