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Mental health

Generalized Anxiety Disorder: Symptoms and Causes

Generalized anxiety disorder is persistent, hard-to-control worry across many areas of life that lasts for months and interferes with daily functioning. It is common and treatable.

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Dr. Sofia Herrera, MD — Psychiatrist

Diagnosing GAD with validated measures, ruling out medical contributors like thyroid problems, and providing CBT or SSRI treatment with workplace coordination. Gale can match you with a licensed clinician for a visit.

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What generalized anxiety disorder is

Occasional anxiety is a normal part of life, but an anxiety disorder is different: it involves persistent, excessive fear or worry that does not go away and can get worse over time 1. In generalized anxiety disorder, the worry is not pinned to one thing. It spreads across many areas — your job, your relationships, your health, small daily tasks — and feels difficult to switch off. Clinicians generally look for worry that is present more days than not for at least six months and that causes real distress or interferes with functioning.

Common symptoms

GAD blends mental and physical symptoms. The mental side includes constant worry, anticipating the worst, difficulty concentrating, and trouble tolerating uncertainty. The physical side often includes restlessness or feeling on edge, fatigue, muscle tension, irritability, and disrupted sleep. Sleep and anxiety are tightly linked and tend to worsen each other, so trouble falling or staying asleep is both a symptom and a driver of GAD 2. Many people also notice headaches, stomach upset, or a racing heart.

What causes it

There is no single cause. GAD usually arises from a mix of factors: genetics and family history, brain chemistry and how your threat system is wired, temperament, and life experiences such as stress, trauma, or ongoing pressures. Anxiety is among the most common mental-health conditions, affecting people across ages and backgrounds 3. Having GAD is not a character flaw or a sign of weakness — it reflects a nervous system that has learned to stay on high alert.

How it is treated

GAD responds well to treatment. Cognitive behavioral therapy (CBT) helps you recognize and reframe worry patterns and gradually face avoided situations; it is one of the best-studied treatments for anxiety 4. Medication, often an SSRI, can reduce the baseline level of anxiety, and is sometimes combined with therapy; both CBT and SSRIs have considerable empirical support 45. Lifestyle steps — regular movement, steadier sleep, and limiting caffeine and alcohol — support recovery. Many people improve substantially, especially when treatment is matched to their needs.

When a clinician helps

If worry is constant, hard to control, and getting in the way of work, sleep, or relationships, a clinician can help. A behavioral-health provider can use validated questionnaires to measure your anxiety and confirm whether it fits GAD rather than another condition 5. They can rule out medical contributors such as thyroid problems, and then offer evidence-based treatment: CBT to retrain worry patterns and, when helpful, an SSRI 45. A clinician can also coordinate with your workplace if anxiety is affecting your job, and adjust the plan over time as you improve.

Common questions

How is GAD different from normal worry?

Normal worry is tied to a real situation and eases when it resolves. GAD worry is excessive, spreads across many areas, is hard to control, lasts for months, and interferes with daily life even when there is no clear reason.

Is generalized anxiety disorder curable?

Many people achieve significant, lasting improvement with treatment. CBT, medication when appropriate, and lifestyle changes can reduce symptoms substantially, even if anxiety does not vanish entirely. The goal is for it to stop running your life.

Do I need medication for GAD?

Not always. Some people do well with therapy and lifestyle changes alone. Medication such as an SSRI is one effective option, especially for moderate to severe symptoms, and the choice is best made with a clinician based on your situation.

Talk to a clinician

Dr. Sofia Herrera, MD — Psychiatrist

Diagnosing GAD with validated measures, ruling out medical contributors like thyroid problems, and providing CBT or SSRI treatment with workplace coordination. Gale can match you with a licensed clinician for a visit.

Find care →

Reach out for care if you notice

  • —Worry or physical symptoms that have lasted months and are interfering with work, sleep, or relationships
  • —Panic attacks or avoidance that is shrinking your world
  • —Anxiety along with low mood, hopelessness, or loss of interest
  • —Using alcohol or other substances to cope with worry

If you ever have thoughts of harming yourself, call or text 988 (Suicide & Crisis Lifeline), available 24/7.

This article is general education and is not a diagnosis or a substitute for personalized medical care.

References

  1. 1.National Institute of Mental Health (NIMH) (2024). Anxiety Disorders. National Institute of Mental Health, NIH. link ✓An anxiety disorder involves persistent, excessive fear or worry that does not go away and can worsen over time.
  2. 2.Alvaro PK, Roberts RM, Harris JK (2013). A Systematic Review Assessing Bidirectionality between Sleep Disturbances, Anxiety, and Depression. Sleep, 36(7):1059–1068. doi:10.5665/sleep.2810 ✓Sleep disturbance and anxiety are bidirectionally related, each worsening the other.
  3. 3.Polanczyk GV, Salum GA, Sugaya LS, Caye A, Rohde LA (2015). Annual Research Review: A meta-analysis of the worldwide prevalence of mental disorders in children and adolescents. Journal of Child Psychology and Psychiatry 56(3):345-365. doi:10.1111/jcpp.12381 ✓Anxiety disorders are among the most common mental-health conditions.
  4. 4.Walter HJ, Bukstein OG, Abright AR, Keable H, Ramtekkar U, Ripperger-Suhler J, Rockhill C (2020). Clinical Practice Guideline for the Assessment and Treatment of Children and Adolescents With Anxiety Disorders. Journal of the American Academy of Child & Adolescent Psychiatry 59(10):1107-1124. doi:10.1016/j.jaac.2020.05.005 ✓Both CBT and SSRI medication have considerable empirical support as effective treatments for anxiety.
  5. 5.Connolly SD, Bernstein GA; Work Group on Quality Issues (AACAP) (2007). Practice Parameter for the Assessment and Treatment of Children and Adolescents With Anxiety Disorders. Journal of the American Academy of Child & Adolescent Psychiatry 46(2):267-283. doi:10.1097/01.chi.0000246070.23695.06 ✓A multimodal assessment using validated measures, with CBT and SSRIs as first-line treatment for anxiety disorders.

5 sources, numbered by first appearance. General health information, not medical advice — synthetic demonstration content.