+1 fo finding a good physio
Took a combination of stretching and stengthening to get rid of my problems.
As a start google ITB stretch, basicly involves crossing the ‘bad’ leg behind the good leg and push the bad hip ipt sideways/lean towards the good leg. You’ll know when it’s right as you bend over a lot further, it’s easy to twist a little and not stretch anything, but do it right and you cant bend very far before you fele the stretch just below your pelvis.
Stretching glutes and hip flexors also helped as they were out of ballance so my legs were working theough an unusual range of motoion which was casuing problems.
Combine that with the usual leg stretches.
Foam rollers help, or if your a man, a rolling pin is a more painfull substitute, or for real tough guys, use a tennis ball.
As for strengthening, I had to do a series of weighed exercises and was basicly told to do any sportt hat would require a variety of leg movements rather than anything too repettative. So running, cycling and rowing were out, swimming (vary the strokes), boxercise/body pump/ body combat/yoga/pilates/any other gym class that wasnt spinning were in.