It constricts the blood vessels in the brain and causes felling of unreality because the brain is not geting enough oxygen. All your symptoms are causes by too much adrenal in the blood stream. They are harmless and you will not go crazy. Forget about them. You need to do the relaxion exercises every day.
Stress can cause many symptoms on the body.
They are all well known and we all have them. You got to learn not to fear your symptoms. Learn what adrenal does to the body to produce your symptoms. It will make you think you are going crazy. Take some calcium and go lie down .Then practice deep breathing and self hypnosis.