Do I need trekking poles for Lamkhaga pass trek?

This is a rather personal preference. Many people swear by them, particularly on treks with long ascents(like Baspa river glacier snout to Lamkhaga pass summit) and descents, others consider that they get in the way and prefer to manage without them. If you have weak hips, knees or ankles, trekking poles can be effective in reducing the strain.