LOW BACK PAIN & LUMBAR DISC HERNIATIONLOW BACK PAINPathophysiology u uComplexComplexu uChemical Chemical cause:glutamate,substancecause:glutamate,substance P,PLA2 P,PLA2Symptomsu uCause: mechanical strainu uSpine listSignsu uNormal neurologic examination u uNo sign of spinal nerve compressionImaging Studiesu uNarrow disk space u uOsteophytosisu uAlso may be normalTreatmentu uAnalgesics Analgesics u uRestRestu uExercisesExercisesu uCorsetCorsetCourse and Prognosisu uSpontaneous remissionSpontaneo