Trigger points, formerly called myogeloses are hypersensitive points in a palpable tense bundle of muscle fibers. Trigger points cause pain during movements, sometimes even at rest. A typical characteristic of trigger points is, that they radiate pain.
The epicondylitis is a painful irritation of the tendons of forearm muscles. Typical is a circumscribed tenderness over the muscle attachment at the elbow and pain is precipitated or amplified upon actuation of these muscles. Depending on the location the epicondylitis is called tennis or golfer's elbow.