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.
When you feel anxious and stressed, your brain floods your system with hormones and chemicals designed to help you respond to a threat. Thatâs good in the short term, but harmful in the long term. Read more. Panic attacks can lead to anxiety over further attacks, so your brain continues to release stress hormones. This can lead to headaches, muscle tension, and loss of sexual desire. Anxiety disorders increase the risk of clinical depression and substance abuse. Read more. Short-term anxiety can boost your immune system.