Possibly overuse. If this happens repeatedly, visit your doctor.
check out thr thiroid
Lack of potassium.
I think cold temperature causes the muscle tissue in the face area to contract and when you go to yawn for example, the muscle tissue is forced to expand too quickly, causing cramp to occur. In other words, cramp is a result of over stressing the muscle tissue. I've often had cramp on very cold days in my lower chin area and it can be very painful for a few minutes.
When a muscle cramp occurs, the muscle contracts forcibly and involuntarily and doesn't relax for the time the cramp lasts. The cramp can last from few seconds up to few minutes.
A muscle cramp is likely due to a lack of
Your muscles cramp up after exercise if you do not stretch
your fingers cramp like you have cramp
When you experience a leg or muscle cramp, it is because the muscle has constricted or tightened up. The lump you are referring to is the muscle itself that has tightened up. When your muscle relaxes, the cramp goes away.
A painful contraction of a muscle is a cramp or charley horse.
Stop doing whatever activity triggered the cramp, Gently stretch and massage the cramping muscle, holding it in stretched position until the cramp stops, and Apply heat to tense/tight muscles, or cold to sore/tender muscles.
Often it is called a cramp.
A spasm or cramp