Priya was thirty-four, an associate at a corporate law firm in Houston, when she had what she was certain was a heart attack on a Wednesday afternoon at 4:18pm. She was in her office reviewing a draft contract when her chest tightened, her hands started tingling, her vision narrowed at the edges, and her heart began pounding so hard she could see her shirt move. She told her assistant she felt strange and sat down. Within two minutes she was hyperventilating and crying. Her assistant called 911 over Priya’s protest. The paramedics took her vitals, ran a 12-lead EKG in the back of the ambulance, and brought her to the ER at the Texas Medical Center. Heart rate 148. Blood pressure 162 over 98. Oxygen 100 percent on room air. EKG normal. Troponin negative. Six hours later she was discharged with a paper referral to her primary care doctor and a recommendation to follow up. She had her second panic attack emergency room visit nine days later. The cycle she was about to enter, of repeated ER visits without ever connecting with psychiatric care, is the most common failure mode in panic disorder.
Why panic attacks land in the ER
Panic attacks are the third most common ER complaint among adults under 40, behind chest pain of unclear cause and abdominal pain. Many of those chest pain visits are also panic attacks, just labelled as cardiac concerns until the workup completes. The reason panic attacks present to ERs is that the somatic symptoms genuinely mimic life-threatening conditions. Tachycardia, chest tightness, shortness of breath, dizziness, paraesthesia, and a sense of impending doom are not subtle. The patient who has never had one is correct to be alarmed and correct to seek emergency care. The mistake is not the visit. The mistake is the discharge plan.
A typical panic attack emergency room presentation peaks within 10 minutes of onset, plateaus for 20 to 30 minutes, and resolves over 60 to 90 minutes. By the time the patient is roomed and worked up, the acute phase is often over. The patient is exhausted, embarrassed, and looking for an explanation. Without a clear next step, they leave with a vague reassurance that their heart is fine and a recommendation to manage stress.
Distinguishing panic from cardiac event
The cardiac workup in the ER is non-negotiable for first-time presentations. EKG within 10 minutes of arrival, troponin at presentation, and a focused history. The differentiating features that favour panic are: rapid onset peaking in minutes rather than gradual onset, paraesthesia in the perioral area or fingertips suggestive of hyperventilation, hyperventilation that improves chest pain rather than worsens it, normal EKG, normal troponin, and absence of cardiac risk factors. Features that warrant deeper cardiac workup include older age, known coronary disease, exertional onset, ST changes, troponin elevation, and persistent symptoms beyond 30 minutes despite reassurance.
The two diagnoses can coexist. Patients with known coronary disease have panic attacks. Anxiety can also trigger genuine cardiac events through tachycardia, hypertension, and platelet activation. The clinical posture is to rule out the dangerous diagnosis with appropriate workup, not to label a young patient with anxiety and skip the EKG. Most ER algorithms now include both cardiac screening and a brief mental health assessment for patients with chest pain.
Hyperventilation tetany and the saline question
Hyperventilation during panic produces respiratory alkalosis. Carbon dioxide drops, blood pH rises, calcium binding to albumin shifts, and ionised calcium effectively decreases. The clinical result is tetany: tingling around the mouth and in the fingers, carpopedal spasm in severe cases, and dizziness. The classic teaching to breathe into a paper bag rebreathes carbon dioxide and corrects the alkalosis. This works in many cases but carries some risk of hypoxia in patients with underlying lung or heart disease.
The modern ER approach is paced breathing instructions, often delivered by a calm nurse or technician, with target inspiration of 4 seconds and expiration of 6 seconds. Normal saline IV is sometimes given for severe cases with significant tetany or as a placeholder while the patient calms. The actual therapeutic effect of saline in panic is debatable, but the ritual of being attached to an IV often itself produces calming. This is not a bad thing.
Benzodiazepines: when and how
For severe acute panic that does not respond to behavioural interventions in 30 minutes, oral or IV lorazepam is the standard ER medication. Lorazepam 1 to 2mg orally is typical. IV dosing is reserved for patients who cannot tolerate oral due to hyperventilation or severe agitation. The dose is titrated to effect, with most patients responding to 1 to 2mg total. Onset is 15 to 30 minutes oral, 5 to 10 minutes IV.
The ER use of benzodiazepines for panic is appropriate. The chronic outpatient use is more controversial and should be limited to short-term bridge therapy while SSRIs or therapy take effect. The ER prescription bridge of 5 to 10 lorazepam tablets is reasonable to cover the gap until psychiatric follow-up. Longer prescriptions from the ER are not appropriate and contribute to dependence patterns. The patient leaving with a benzodiazepine prescription needs a clear, scheduled handoff to outpatient psychiatry.
The discharge plan that actually works
The most common ER discharge for panic attacks is a paper referral to a primary care physician with a recommendation for stress management. This is, in practice, useless. Primary care offices are booked weeks out. The patient never makes the appointment. Or they do, and the PCP refers them to psychiatry, which is booked months out. The cycle of repeated ER visits continues. Every visit costs the patient and the system thousands of dollars. None of them produce treatment.
The discharge plan that actually works includes three elements: a same-week or rapid-access psychiatric appointment, a brief introduction to a CBT-based panic protocol, and contact information for a walk-in crisis centre or telehealth provider that can bridge until the appointment. Our overview of walk-in crisis centres walks through what these models look like. Online psychiatry options for anxiety are covered in our piece on finding an online psychiatrist for anxiety.
The cycle of repeated ER visits
Studies have repeatedly shown that patients who present to ERs with panic attacks and do not receive psychiatric follow-up have repeat visits within 90 days at rates of 30 to 40 percent. The cumulative cost is staggering, and the harm is not just financial. Each visit reinforces the catastrophic interpretation of bodily sensations that drives panic. The patient learns that their symptoms are dangerous enough to warrant emergency care, which sensitises them to those sensations and increases the probability of the next attack. This is exactly the opposite of what cognitive behavioural therapy for panic teaches, which is that the sensations are uncomfortable but not dangerous.
Breaking the cycle requires a single competent psychiatric assessment that delivers a diagnosis, a treatment plan, and a clear explanation of what panic is and is not. Patients who get this assessment in the ER itself or within the first week show meaningful reductions in repeat ER use. Programs that embed psychiatric consultation in the ER, sometimes via telehealth, have produced strong outcomes.
Rapid-access psychiatry: how to find it
Rapid-access psychiatry means an appointment within 7 to 14 days of referral, ideally within 7. The model exists in academic medical centres, integrated health systems, and an increasing number of community mental health agencies. Telehealth psychiatric services have substantially expanded access. National platforms now offer initial appointments within 3 to 5 days for most insurance types. The trade-off is that telehealth psychiatrists rotate frequently and continuity can be poor, but for the acute panic disorder workup the speed of access matters more than the long-term continuity.
The National Institute of Mental Health publishes patient-facing guides on panic disorder at nimh.nih.gov that cover symptoms, treatment options, and when to seek emergency care. The CDC publishes prevalence and provider availability data at cdc.gov. Both are useful for orienting patients and families to what panic disorder actually is and what evidence-based treatment looks like.
When partial hospitalisation makes sense
Some patients with severe panic disorder cannot be managed with weekly outpatient therapy. The criteria for partial hospitalisation programs include multiple panic attacks per week, agoraphobic avoidance that prevents leaving the home, work or school disability, repeated ER visits, and poor response to first-line outpatient treatment. PHP runs 5 to 6 hours per day, 5 days per week, for 2 to 4 weeks, with intensive group CBT, exposure therapy, medication management, and skills training.
The cost is substantial but most insurance plans cover PHP when medical necessity criteria are met. The clinical outcomes are strong. PHP can short-circuit the cycle of ER visits that some patients fall into and produce durable reduction in panic frequency. Step-down to intensive outpatient programs and then standard outpatient therapy is the typical trajectory.
Distinguishing panic from PTSD flashbacks
One of the most common diagnostic errors in ER psychiatric assessment is mistaking PTSD flashbacks for panic attacks. The somatic symptoms overlap substantially: tachycardia, sweating, dissociation, sense of impending doom. The differentiating features are the trigger and the cognitive content. Panic attacks are often unexpected and the cognitive content is fear of dying, going crazy, or losing control. Flashbacks are triggered by trauma cues and the cognitive content is the trauma memory itself, often with sensory re-experiencing.
The treatment paths diverge meaningfully. Panic disorder responds to SSRIs and CBT for panic. PTSD responds to SSRIs, prazosin for nightmares, and trauma-focused therapies including prolonged exposure and EMDR. Misdiagnosing one as the other delays effective treatment by months. A competent psychiatric evaluation distinguishes them with a careful history. Our overview of building a recovery toolkit covers how patients use the time between ER visit and stabilised treatment to develop self-management skills.
Frequently asked questions
How do I know if I should go to the ER for a panic attack?
For first-time presentations or symptoms that feel meaningfully different from prior attacks, ER evaluation is appropriate. For known panic disorder with a typical attack, urgent psychiatric care or telehealth crisis services are usually a better option than the ER, which cannot offer the psychiatric continuity care needed.
Will the ER give me Xanax?
ERs typically use lorazepam rather than alprazolam for acute panic because of pharmacokinetics and dependence considerations. Most ERs do not prescribe alprazolam at discharge. A short bridge of 5 to 10 lorazepam tablets is sometimes provided.
Why does the ER keep telling me my heart is fine when I feel like I am dying?
Panic attacks produce genuine somatic symptoms that feel life-threatening. The cognitive misinterpretation of these symptoms as cardiac is part of the disorder. CBT for panic specifically targets this misinterpretation and reduces the ER cycle.
Can I get psychiatric help without going through my PCP?
Yes. Most insurance plans no longer require PCP referral for psychiatric care. Telehealth platforms allow direct booking. Walk-in crisis centres in many cities offer same-day psychiatric assessment.
How long does panic disorder treatment take to work?
SSRIs typically take 4 to 6 weeks to produce meaningful reduction in panic frequency. CBT for panic produces measurable improvement in 8 to 12 weekly sessions. Most patients see substantial improvement within 3 months of starting evidence-based treatment.
The bottom line
Panic attacks land in the ER for good reason: the somatic symptoms are alarming and demand a cardiac workup the first time around. The failure mode is the discharge plan. A paper referral to a PCP produces repeated ER visits, escalating cost, and worsening illness severity. The discharge plan that works is rapid-access psychiatry, brief CBT psychoeducation, and a bridge to outpatient care. Patients who receive that integrated handoff respond well to evidence-based treatment within months. Patients who get reassurance and a referral often spend years cycling through ERs before connecting with care that works.
If you are in immediate emotional crisis or thinking about suicide, call or text 988 to reach the Suicide and Crisis Lifeline. Trained counsellors are available 24/7 and the call is free and confidential.
This article is for educational purposes only and does not constitute medical or psychological advice. Always consult a licensed emergency physician, psychiatrist, or therapist for diagnosis and treatment of panic disorder and anxiety conditions.