Anxiety

Worry / Nervousness / Anxiousness

Moderate severity88% reported by patientsICD-10: R45.1

Summary

A state of excessive worry, unease, or fear that can manifest as both mental tension and physical symptoms such as racing heart, sweating, and shortness of breath.

What is it?

Anxiety is both a normal emotion and a clinical symptom. As a symptom, it spans a spectrum — from appropriate stress responses to pathological states that impair daily functioning. Physical symptoms of anxiety are driven by autonomic nervous system activation: increased heart rate, rapid breathing, muscle tension, sweating, and gastrointestinal distress. Persistent anxiety disproportionate to circumstances, lasting weeks or months, often meets criteria for generalized anxiety disorder, panic disorder, or social anxiety disorder. These are highly treatable conditions.

Common causes

Psychiatric Conditions

  • Generalized anxiety disorder (GAD)
  • Panic disorder
  • Social anxiety disorder
  • PTSD
  • OCD

Medical Causes

  • Hyperthyroidism
  • Cardiac arrhythmia
  • Hypoglycemia
  • Pheochromocytoma
  • COPD / asthma

Substance-Related

  • Caffeine excess
  • Stimulant medications
  • Alcohol withdrawal
  • Cannabis use in susceptible individuals

Situational

  • Life stressors
  • Trauma
  • Workplace burnout
  • Financial or relationship stress

When to see a doctor

  • 1Anxiety interferes with work, school, relationships, or daily activities
  • 2You experience panic attacks — sudden intense fear with physical symptoms
  • 3You are using alcohol, drugs, or medication to manage anxiety
  • 4Anxiety accompanies depression, hopelessness, or thoughts of self-harm
  • 5Physical symptoms (palpitations, chest pain) that have not been medically evaluated
  • 6Anxiety that has persisted for more than 6 months

What you can do

  • Practice diaphragmatic breathing: slow 4-count inhale, 6-count exhale to activate the parasympathetic system
  • Regular aerobic exercise (3–5 times per week) is as effective as medication for mild-moderate anxiety
  • Limit caffeine — a major anxiety amplifier often overlooked
  • Try progressive muscle relaxation or mindfulness-based stress reduction (MBSR)
  • Maintain a regular sleep schedule — sleep deprivation dramatically worsens anxiety
  • Avoid avoidance: gradually facing feared situations reduces anxiety better than avoiding them

Frequently asked questions

This page is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or a qualified health provider with questions about your symptoms or medical conditions.

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