Simply put - agoraphobia means that you avoid a lot of ordinary activities and situations for fear of having panic attacks. To most people who get this diagnosis, the term sounds pretty scary, but that's all it means. It does not mean you are or will become house bound. That can happen to people, and is an extremely severe case of agoraphobia, but the great majority of people with agoraphobia do not experience it to that extent.
In Europe about 3% of the population has a panic attack in a given year while in the United States they affect about 11%. They are more common in females than males. They often begin during puberty or early adulthood. Children and older people are less commonly affected. A meta-analysis was conducted on data collected about twin studies and family studies on the link between genes and panic disorder. The researchers also examined the possibility of a link to phobias, obsessive-compulsive disorder (OCD), and generalized anxiety disorder. The researchers used a database called MEDLINE to accumulate their data. The results concluded that the aforementioned disorders have a genetic component and are inherited or passed down through genes. For the non-phobias, the likelihood of inheriting is 30%-40% and for the phobias, it was 50%-60%.
Post-Traumatic Stress Disorder affects people after terrifying events such as physical or sexual abuse, car accidents, war or natural disasters. Individuals with PTSD may experience depression, flashbacks, nightmares, sleep difficulties, irritability, aggression, violence, and a feeling of detachment or numbness. Symptoms can be triggered by anything that reminds the individual of their trauma.
Several drugs can cause or worsen anxiety, whether in intoxication, withdrawal or from chronic use. These include alcohol, tobacco, cannabis, sedatives (including prescription benzodiazepines), opioids (including prescription pain killers and illicit drugs like heroin), stimulants (such as caffeine, cocaine and amphetamines), hallucinogens, and inhalants. While many often report self-medicating anxiety with these substances, improvements in anxiety from drugs are usually short-lived (with worsening of anxiety in the long term, sometimes with acute anxiety as soon as the drug effects wear off) and tend to be exaggerated. Acute exposure to toxic levels of benzene may cause euphoria, anxiety, and irritability lasting up to 2 weeks after the exposure.
Occasional anxiety is an expected part of life. You might feel anxious when faced with a problem at work, before taking a test, or before making an important decision. But anxiety disorders involve more than temporary worry or fear. For a person with an anxiety disorder, the anxiety does not go away and can get worse over time. The symptoms can interfere with daily activities such as job performance, school work, and relationships.