I've had it for more than 20 years. Muscle inflammation causes mine. Massages help. What I do is at the very first hint of pain, take 4 200mg Ibuprofen (Advil) which is a very effective anti-inflammatory. That's the same dose (800mg) your dentist will give you for mild tooth pain. Usually don't need a second dose, but if it persists, I take one the next morning. Almost always clears it up.
Some people take Naproxen (Aleve) but that doesn't work for me as well as Advil.
If I let it go without taking Advil, it gets worse and then you are down for a few days of rest and pain, which i much prefer to avoid.
You shouldn't take Advil on a continuous basis, there is a slight risk of Heart Attack with prolonged usage. Just hit it hard when it's needed and stop.
If it carries on after that, I go seek professional help, but since I started doing that, I haven't had to.
