question: Hrio,m m ay I answer your health queries right now ?  Please type your query here...hi doc,  i have this back ache which originates from the left hip (lower side) in certain postures of sitting & walking & goes till my left knee knuckles....could this be sitica ?? i have been doing sum random exercises over the past fortnight (although i have stopped the same once this problem surfaced) but could it be due to those exercises or could it be  a case of sitica ??? pls answer....