text: how can i relieve sciatic nerve pain,particularly in the leg while sitting or standing.?   sitting will nearly always aggravate it and moving may relieve it - standing will aggravate it if you are slightly hyperextended in your back  seek some professional diagnoses - you will have a problem in the l4/l5/s1 region of your back   icing your lower back may help as might warming it at times   learn how to correct your posture (not over correct it!) and learn how to strengthen your lower back and abdominal muscles correctly - if they are strong they will take some of the load of the area of damage in your spine and ease the pressure