Anxiety
Anxiety is a state of fear, worry, or apprehension that can involve both thoughts and body sensations. It becomes a health problem when it is intense, persistent, hard to control, or disruptive to daily life, and anxiety disorders are among the most common mental health conditions.
What anxiety is
Anxiety is a normal human response to danger, uncertainty, pressure, or anticipated loss. It can sharpen attention and prepare the body to act. Anxiety becomes a disorder when fear or worry is excessive, persistent, hard to control, out of proportion to the situation, or disruptive to relationships, work, school, sleep, health, or daily routines.
Mind and body symptoms
Anxiety can involve racing thoughts, worry, dread, irritability, trouble concentrating, avoidance, checking, reassurance seeking, or feeling unable to relax. Body symptoms can include a fast heartbeat, shortness of breath, sweating, trembling, stomach upset, muscle tension, dizziness, chest tightness, headaches, fatigue, or sleep problems.
Types of anxiety disorders
Anxiety disorders include generalized anxiety disorder, panic disorder, social anxiety disorder, specific phobias, separation anxiety disorder, and other related conditions. Each has a different pattern. Some center on constant worry, some on sudden panic attacks, some on feared social judgment, and some on specific objects, places, or situations.
Panic attacks
A panic attack is a sudden surge of intense fear or physical alarm. Symptoms can include chest discomfort, racing heart, sweating, shaking, shortness of breath, choking sensations, dizziness, nausea, numbness, chills, heat, fear of losing control, or fear of dying. Panic attacks can feel dangerous even when they are not caused by a heart attack or another emergency, so new or severe symptoms should be assessed medically.
Avoidance and safety behaviors
Avoidance can make anxiety easier in the short term but stronger over time. If a person avoids driving, crowds, public speaking, medical visits, or uncertain situations, the brain may never learn that the feared outcome is unlikely or manageable. Safety behaviors, such as excessive checking or reassurance seeking, can keep the same cycle going.
Causes and risk factors
Anxiety disorders do not have one cause. Risk can be shaped by genetics, temperament, stressful experiences, trauma, medical illness, substance use, sleep disruption, chronic pain, family patterns, social stress, and brain circuits involved in threat detection and learning. Anxiety is not a personal weakness, and it can affect people who appear capable or successful.
Diagnosis
Diagnosis is based on symptom pattern, duration, impairment, medical history, medications, substance use, and sometimes screening tools. Clinicians may also check for thyroid disease, heart rhythm problems, breathing conditions, medication effects, caffeine or stimulant use, depression, trauma-related symptoms, or other conditions that can overlap with anxiety.
Treatment
Treatment can include psychotherapy, especially cognitive behavioral therapy and exposure-based approaches, as well as medicines such as selective serotonin reuptake inhibitors, serotonin-norepinephrine reuptake inhibitors, or other options when appropriate. Treatment may also address sleep, exercise, alcohol or caffeine use, breathing patterns, stressors, and coexisting depression or pain.
Self-management and support
Self-management is not a replacement for care when anxiety is severe, but it can support recovery. Helpful steps may include regular sleep, gradual exposure to avoided situations, reducing stimulant use, planned worry time, relaxation skills, physical activity, social support, and learning how anxiety sensations rise and fall without needing every fear to be answered immediately.
Why it matters
Anxiety matters because it can quietly shrink a person's life. It can affect school, work, relationships, medical care, travel, sleep, digestion, pain, and decision-making. Understanding anxiety as a treatable health condition helps reduce stigma and supports earlier, more practical help.