Thyroid disease in cats is linked to heart disease and a fast heartbeat in conjunction with any other symptoms of thyroid problems is cause for a trip to the vet. Once the hyperthyroidism is treated, your cat's heart rate should return to normal.
Stress reaction â some studies have found that paranoia is more common in people who have experienced severe and ongoing stress â for example, prisoners of war. How stress can trigger paranoia is unclear.
mental stress. 1  agitation. 2  ants in pants. 3  antsiness. 4  anxiety. 5  apprehension. 6  bad feeling. 7  brunt. 8  concern. 9  discomfort. 10  disquiet. 11  edginess. 12  hostility. 13  jitters. 14  jumps. 15  nail-biting. 16  nerves. 17  nervousness. 18  pins and needles. 19  pressure. 20  restlessness. 21  shakes. 22  strain. 23  suspense. 24  unease. 25  uneasiness. 26  worriment. 27  worry.