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.
How can this pain in or near the ear be caused by stress? Frequent clenching of the jaw is a habit of many people. Often this is a stress related problem that causes the person to bite on pens, pencils, or fingernails. This often happens during sleep also with grinding of the teeth, and clenching of the jaw.