Rapid Heart Beat in Cats. Save to mypetMD. Supraventricular tachycardia (SVT) is a medical condition that is characterized by a rapid heart rate that occurs during times of rest or low activity (i.e., at times other than exercise, illness, or stress).
If you chew too much or subconsciously clench your jaws during stressful times, your jaw muscles can spasm and cause pain. Stress-induced clenching or grinding can cause slight misalignment of the jaw, leading to jaw, neck, or eye pain, as well as jackhammer-like headaches.
View All. Finding out what causes jaw pain can sometimes be difficult, since the pain can come from the muscles, nerves, or bones in the jaw or from areas of the body you'd never suspect. (For example, sudden jaw pain can be a symptom of a heart attack.) When jaw pain arises from a problem in another area of the body, it's called referred pain.