Scientists agree: this is why people with social anxiety remain constantly on high alert
The fear of being judged activates brain mechanisms linked to danger, keeping many people in a permanent state of vigilance.

For many people, interacting with others can feel uncomfortable or nerve-racking. However, when that fear becomes intense and persistent, it may be social anxiety disorder, a condition that causes those who experience it to live in a near-constant state of alert.
According to specialists, the key lies in how the brain interprets certain social situations. People with this disorder often feel intense anxiety at the possibility of being observed, evaluated, or judged by others, even in everyday situations such as speaking to strangers, answering a question in class, or asking about a product in a store.
This perception of threat activates the body’s alert system, the same one that is triggered when we detect real danger. As a result, the body responds with physical symptoms such as a rapid heartbeat, sweating, trembling, or a feeling of going blank.
In practice, this means the brain interprets a social interaction as a potential risk, keeping the person in a constant state of vigilance.
It’s one thing to feel nervous. It’s another to feel paralyzed.
— Mayo Clinic (@MayoClinic) August 12, 2025
Social anxiety disorder affects around 12% of U.S. adults. Learn the signs, when to seek help, and how treatment can make a difference. https://t.co/lpWDxo0Eqw pic.twitter.com/UIWIbrI5dd
The fear of being judged keeps the brain on high alert
Researchers explain that the root of the problem is often an intense fear of negative evaluation by others. In other words, the fear of embarrassing oneself, making a mistake, or being socially rejected.
As a result, many people end up avoiding gatherings, events, or any situation where they might feel exposed. In the short term, this reduces anxiety, but in the long term, it reinforces the problem because the brain continues to interpret these situations as dangerous.
Experts also point out that social anxiety does not have a single cause. Research suggests a combination of factors, including genetics, the functioning of certain areas of the brain, and personal experiences.
Although it may seem like simple shyness, specialists emphasize that it is a disorder that can seriously affect daily life, from personal relationships to work or studies.
The good news is that effective treatments are available. Psychotherapy and certain medications can help reduce symptoms and allow individuals to regain confidence in social interactions, breaking the cycle of constant alert that characterizes social anxiety.
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