Many things like foam rolling & stretching can help target hip tightness, however you need to target more exact areas in order to eradicate the problem.
Decreasing tightness in the glutes, hip flexors & adductors is a good starting point. A more specific approach such as trigger point release will help to target the areas where muscles and nerves interact. As you are dealing with nerves, its important to start by using a softer trigger point ball to avoid flaring up the region.
Focusing trigger point release on the smaller muscles of the hip (tensor fascia lata – TFL, gluteus medius, gluteus minimus) to alleviate pain and regional tightness around the hip joint.
Place the roller/ball under your bottom and roll in a forward/back and side to side motion
Lying sideways with legs straight over the roller or ball, slide up and down from the top of the hip to the top of the knee
Lying face down over the ball or roller and apply pressure from the top of the hip, down the thigh to the knee
Rpt for 10-20 reps on each exercise and repeat several times.
Aim for 10-20min of trigger point release a few times per week to keep the muscles and fascia healthy