When one is confronted with a hypothetically perilous situation, for instance, a large barking dog, anxiety or nervousness is said to be a healthy reaction. Sensing the peril, your brain sends signals for releasing hormones to organize your body to protect itself. In such cases, your muscles become tense, the pace of breathing and heartbeat augments and even the blood turns out to be more liable to coagulate anticipating any injury. In the instance of some people, this reaction is triggered even when there is actually no palpable danger whatsoever. This type of response may actually be harmful for your health, as it may result in exhaustion, absence of or very poor concentration, a feeling of aloofness from yourself or your environment, as well as physical disorders, such as headaches, rise in blood pressure and even stomach disorders.
It may be noted here that nervousness or anxiety disorders actually occur in two different fundamental types. The first, generalized anxiety disorder (also called GAD) is a persistent condition that entails a frequent feeling of an ominous or menace and concern in the company of gentle physical symptoms. On the other hand, a panic attack occurs all of a sudden and out of the blue accompanied by symptoms that are so aggressive that the episodes are generally misunderstood to be a heart attack or any other critical health condition.
A number of scientists are of the belief that the central nervous system (CNS) of people enduring anxiety disorders is likely to react excessively to stress and may take a comparatively long time than most others to come back to the normal or calmer condition. Nervousness or anxiety may commence with a shocking incident, such as, a death or divorce, or it may also not have any particular origin or cause.
In fact, a biochemical basis may also exist for anxiety or nervousness. Findings of several researches have demonstrated that people who are liable to panic attacks have an elevated lactic acid level in the bloodstream. Precisely speaking, lactic acid is a chemical that is generated when the muscles metabolize sugar in the absence of sufficient oxygen. Other studies hint that anxiety may well be the consequence of an excessive production of stress hormones by our brain as well as the adrenal glands.
Common anxiety signs and symptoms include:
- Feeling nervous, restless or tense
- Having a sense of impending danger, panic or doom
- Having an increased heart rate
- Breathing rapidly (hyperventilation)
- Feeling weak or tired
- Trouble concentrating or thinking about anything other than the present worry
- Having trouble sleeping
- Experiencing gastrointestinal (GI) problems
- Having difficulty controlling worry
- Having the urge to avoid things that trigger anxiety