Best Answer: The correct phrase is a wolf in sheep's clothing. It means someone is pretending to have good intentions about something, but they are really up to ...
Like other brain illnesses, anxiety disorders may be caused by problems in the functioning of brain circuits that regulate fear and other emotions. Studies have shown that severe or long-lasting stress can change the way nerve cells within these circuits transmit information from one region of the brain to another.
The following are the most likely causes of PMS anxiety: 1  Cortisol Increase Studies have shown that before a woman's period, a stress hormone known as cortisol tends to increase. 2  In many ways, anxiety is a form of long term stress, and stress is known to make anxiety symptoms worse.