"There is nothing, absolutely nothing, quite so worthwhile as simply messing about on bicycles.” -Tom Kunich
Basically, trigger points are overstimulated areas or "knots" in the fascia. They keep the muscles from fully relaxing and pull everything out of alignment. Often they'll refer pain to other areas. Fascia connect muscle to tendon, which is why trigger points are often involved in tendinitis.
You can often feel them externally as lumps in the muscle, especially when you go deep. You can definitely feel pain when you press on them! The simplest way is to roll out the whole muscle group and give extra attention to the trigger points as you find them. A spiky ball is especially useful for places with a lot of small muscles like the hands and feet, but NbyNW is right, a tennis ball or golf ball is good for the arms, chest and shoulders; for large muscles like the IT band area, a foam roller or larger ball.
Speed comes from what you put behind you. - Judi Ketteler
Thank you all so much for your help.
I kept it immobilized for a week and it went away as quickly as it started. I'm suprised at HOW painful that was. It was as bad as when I've broken a bone. Crazy.
Anyway, I'll keep up the strengthening exercises and will splint it when I'm riding for now.
Many thanks
I had it in my knee in college in the early 1980s. Dr. made me quit running and playing racket ball until it went away. Took a couple of weeks off. It quickly came back so I took about a month off and have not experienced it since.
Persistent plantar faciitis has put a stop to my running.