I've had it for almost 2 years now myself.
To be honest, I think once this particular ailment turns chronic, I think most will deal with it forever, especially if you're a iron junkie.
What's worked for me in order of most importance:
1) Moderate all aspects of volume (frequency, intensity, reps/sets, etc). If it's flaring reduce all aspects of volume until you get some relief.
2) Stretch quads, calves, adductors and hamstrings daily. Roll out with your choice of roller. Slow rolls with pauses.
3) Variations! Don't just wear out one movement. This is an overuse injury typically, so find 3-4 squat variations and cycle them.
You can't squat 5 times per week with this ailment. Not happening. I have one 'heavy' session (maybe 2-3 hard sets) and one volume session with something like goblet squats. This has been woeking for me to get close to almost pain free.
Look at some of smashwerx's vids on YouTube.
Good luck; it's a bitch.