Panic Disorder: Why the First Two Weeks of Treatment Feel Worse and How to Get Through Them
A panic attack is the body running a full emergency response with nothing to respond to. Adrenaline rises, the heart accelerates, breathing quickens, blood shifts to the large muscles. Every sensation is real and every one is harmless.
What turns attacks into a disorder is not their severity. It is what happens between them: the constant monitoring of the body for early signs, and the reorganising of life around avoiding places where an attack might happen. Most people with panic disorder are more disabled by the second part than by the attacks themselves.
The condition responds better to treatment than almost anything else in psychiatry. Recovery rates with proper cognitive behavioural therapy run around 70 to 80 percent. The obstacles are usually two: nobody explains what the first fortnight of medication feels like, and nobody teaches the specific technique that does the real work.
⚠️ The single most useful thing to know before starting an SSRI for panic. In the first one to two weeks, SSRIs temporarily increase anxiety and can provoke a panic attack. People with panic disorder are unusually sensitive to this, because the drug produces exactly the bodily sensations they are already scanning for.
The consequence is predictable: the tablet is blamed, it is stopped on day four, and the person concludes that medication makes them worse. In reality the effect is transient and it is largely avoidable by starting at half the usual dose or less and increasing slowly. Escitalopram is started at 5 mg rather than 10, sertraline at 25 mg rather than 50, citalopram at 10 mg rather than 20. Anyone prescribed a standard starting dose for panic disorder should ask about this.
🔄 The loop, and why it builds in minutes
The mechanism is a closed feedback circuit, and understanding it is itself part of the treatment.
- A sensation appears — a skipped beat, slight breathlessness, a moment of light-headedness. Often from something mundane: standing up quickly, caffeine, heat, a missed meal
- The brain labels it catastrophic — heart attack, suffocation, collapse, losing control
- Adrenaline is released in response to the perceived threat
- New sensations appear, stronger than the first
- The catastrophic interpretation is confirmed, and the loop accelerates
Rapid breathing adds a second layer. Breathing off too much carbon dioxide narrows blood vessels to the brain, producing dizziness, tingling in the hands and around the mouth, blurred vision and chest tightness. Those are the symptoms most often interpreted as proof of catastrophe, and they are caused by the fear rather than by any disease.
Attacks peak within about ten minutes and cannot be sustained, because adrenaline is cleared quickly. No panic attack has ever continued indefinitely, and none has caused a heart attack, suffocation or insanity. Attacks that seem to last hours are almost always a short attack followed by a long period of anxiety about having had one.
🩺 Before anything else: what it is not
Panic disorder is a clinical diagnosis made after other explanations have been considered. Most people need only a basic assessment, and some features warrant more.
| Mimic | Clue |
|---|---|
| Overactive thyroid | Weight loss despite eating, heat intolerance, tremor, fast pulse between episodes. One blood test |
| Cardiac arrhythmia | Sudden onset and offset like a switch, pulse over 150, fainting, no fear beforehand |
| Asthma | Wheeze, cough at night, symptoms with exertion or cold air, reliever helps |
| Low blood sugar | Relieved rapidly by eating; in someone on diabetes medication |
| Alcohol or sedative withdrawal | Symptoms 6 to 48 hours after the last drink, with sweating and tremor |
| Substances | Caffeine, stimulants, cannabis, decongestants, salbutamol, thyroid hormone, excess levothyroxine |
| Inner ear disorder | True spinning rather than light-headedness, worse on head movement |
Two situations deserve a lower threshold for investigation: a first panic attack after the age of 45, and attacks without any psychological fear component, which is more typical of a physical cause.
💡 On repeated reassurance-seeking. Early in the illness most people attend an emergency department at least once, which is entirely reasonable. After the heart has been checked properly, further tests stop helping and start harming: each negative result relieves anxiety for a day or two and strengthens the belief that checking is what prevents disaster. At that point the useful move is treatment of the panic, not another ECG.
🧠 The treatment that does the most work
Cognitive behavioural therapy for panic disorder is not generic counselling. It has a specific structure, and one component is doing most of the lifting.
🔄 Interoceptive exposure. The core technique is to deliberately produce the feared sensations, repeatedly, until the brain stops treating them as dangerous. Typical exercises, done with a therapist first:
- Spinning in a chair for 60 seconds, to produce dizziness
- Breathing rapidly for 60 seconds, to produce light-headedness and tingling
- Breathing through a narrow straw, to produce breathlessness
- Holding the breath, to produce chest tightness
- Running up stairs, to produce a racing heart
- Staring at a spot then looking away, to produce unreality
It sounds like the last thing anyone with panic disorder would agree to, and it is the reason the therapy works. Avoiding the sensations teaches the brain they are dangerous; producing them on purpose, without anything bad happening, teaches the opposite. This is what distinguishes effective panic treatment from generally supportive therapy.
Alongside it: correcting the catastrophic interpretations, dropping safety behaviours, and graded return to avoided situations. The safety behaviours matter more than people expect — carrying water, sitting near exits, having someone accompany you, keeping a tablet in a pocket without taking it. Each one prevents the brain from learning that the situation was safe anyway, so they keep the fear alive while feeling protective.
💨 During an attack
- 🗣️ Name it. This is panic. It peaks in about ten minutes and it cannot hurt me
- 💤 Slow the exhale, not the inhale. Breathe in through the nose for four, out through the mouth for six to eight. Do not take big rescue breaths, which make dizziness worse
- 🧍 Stay where you are if you safely can. Leaving teaches the brain that the place was the problem
- ⏱️ Let it peak. Fighting it adds adrenaline. Riding it out is faster
- 👋 Ground yourself in what is physically around you rather than in what your body is doing
🚫 Do not breathe into a paper bag. It is a persistent piece of folklore and it is dangerous: if the symptoms are not from over-breathing — and sometimes they are not — rebreathing carbon dioxide reduces the oxygen available, and deaths have been reported in people whose chest symptoms turned out to be cardiac or asthmatic. Slow exhaling achieves the same physiological effect safely.
💊 Medication: what to use and how to start
Medication is appropriate when attacks are frequent, avoidance is growing, or baseline anxiety is too high to engage with therapy. It is not a substitute for exposure work, and the combination outperforms either alone.
| Medicine | Start | Usual effective dose |
|---|---|---|
| Lexapro (Escitalopram) | 5 mg daily for a week | 10 to 20 mg. Best tolerated of the group |
| Sertafine (Sertraline) | 25 mg daily for a week | 50 to 200 mg |
| Paxil (Paroxetine) | 10 mg daily | 20 to 40 mg. Effective, but the hardest to stop |
| Celexa (Citalopram) | 10 mg daily | 20 to 40 mg, and 20 mg maximum over age 60 |
| Luvox (Fluvoxamine) | 50 mg at night | 100 to 300 mg. Many drug interactions |
| Effexor (Venlafaxine) | 37.5 mg daily | 75 to 225 mg, extended release |
Two older options retain genuine evidence in panic disorder specifically: Anafranil (Clomipramine) and Tofranil (Imipramine), which was the first drug ever shown to block panic attacks. Both are more effective than they are fashionable, and less well tolerated than an SSRI.
📅 The timeline, week by week
- 🟥 Week 1 to 2 — anxiety may be worse, with jitteriness, nausea and disturbed sleep. This is the phase people quit in, and it passes
- 🟧 Week 2 to 4 — side effects settle. Nothing much has improved yet
- 🟨 Week 4 to 6 — the first real change, usually less fear between attacks rather than fewer attacks
- 🟩 Week 8 to 12 — attacks become fewer and milder; the dose is adjusted to effect
- ✅ After response — treatment continues for at least 12 months, because stopping early has a high relapse rate, then is tapered slowly over weeks to months
📉 Never stop an SSRI abruptly. Discontinuation symptoms — dizziness, electric-shock sensations, nausea, irritability, vivid dreams — are common and are frequently mistaken for relapse or for a panic attack, which then gets treated as failure. Paroxetine and venlafaxine produce the worst of it because they clear the body fastest. Tapering is done in small steps over weeks, sometimes months, guided by a doctor.
🚫 Two things worth saying plainly
Buspirone does not work for panic disorder. It is a useful drug for generalised anxiety, and in trials specifically in panic disorder it failed to beat placebo. We stock it as Buspar (Buspirone) for the conditions where it does work, and this is not one of them.
Benzodiazepines are a poor long-term answer, and we do not supply them. They abolish a panic attack within twenty minutes, which is why they are so appealing, and they carry three problems: tolerance within weeks, physical dependence with a difficult withdrawal, and — the one that matters most here — they interfere with the learning that exposure therapy depends on. Taking one before entering a feared situation means the brain attributes the safe outcome to the tablet rather than to the situation, so the fear does not extinguish. Where they are used at all, it is briefly and alongside an SSRI while it takes effect.
☕ What makes panic disorder worse
- Caffeine
- People with panic disorder are measurably hypersensitive to it, and in laboratory challenge studies caffeine provokes panic attacks in a large proportion of them while having little effect on others. This is worth taking seriously: a genuine trial of cutting caffeine entirely for two weeks, including tea, cola and energy drinks, is one of the highest-yield things available.
- Alcohol
- Effective for an hour and counterproductive over a night. Rebound anxiety six to eight hours later, typically waking at 4 am with a racing heart, is one of the commonest patterns behind night-time attacks.
- Poor sleep
- Lowers the threshold directly. Nocturnal panic attacks, waking from sleep in full panic, are common and frightening and are not nightmares.
- Avoidance
- Each avoided situation makes the next one harder. Left alone this becomes agoraphobia, where the accessible world shrinks to a few safe places, and it is the main cause of long-term disability in panic disorder.
- Body scanning and checking
- Repeatedly taking your pulse, checking blood pressure, reading about symptoms. Each check briefly reduces anxiety and reinforces the underlying belief.
- Stimulants and decongestants
- Pseudoephedrine, high-dose salbutamol and some diet products all provoke attacks.
Regular aerobic exercise reduces panic frequency in trials, and it has a second benefit: it repeatedly produces a racing heart and breathlessness in a safe context, which is interoceptive exposure by another name.
📞 When to seek help
- A first attack, to have the physical causes considered properly
- Chest pain with sweating, nausea or pain spreading to the arm or jaw — treat as cardiac and call emergency services, regardless of a panic diagnosis
- Fainting during an attack — uncommon in panic and needs a cardiac assessment
- A first attack after 45, or attacks without the fear component
- Avoidance beginning to shrink your life — earlier treatment is easier treatment
- Worsening anxiety persisting beyond two weeks of starting an SSRI, or severe agitation at any point
- Drinking or using anything to control the attacks
- Thoughts of harming yourself — contact a doctor or emergency service the same day. Panic disorder raises this risk, and it is treatable
❓ Frequently asked questions
Why did my anxiety get worse after starting an SSRI?
Because SSRIs temporarily increase anxiety in the first one to two weeks, and people with panic disorder are unusually sensitive to it. It is transient and largely avoidable by starting at half the usual dose, such as escitalopram 5 mg or sertraline 25 mg, and increasing slowly.
How long before medication works for panic?
The first real change usually appears at four to six weeks, and it is normally less fear between attacks rather than fewer attacks. Fuller benefit comes at eight to twelve weeks, and treatment continues for at least twelve months after response.
Can a panic attack harm me?
No. Attacks peak within about ten minutes because adrenaline clears quickly, and no panic attack has caused a heart attack, suffocation or insanity. Episodes that seem to last hours are usually a short attack followed by prolonged anxiety about having had one.
Is it panic or my heart?
Cardiac causes tend to start and stop abruptly with a pulse over 150, without preceding fear, and may cause fainting. Chest pain with sweating, nausea or pain spreading to the arm or jaw should be treated as cardiac and assessed urgently, whatever the previous diagnosis.
Should I breathe into a paper bag?
No. It is dangerous folklore: if the symptoms are not from over-breathing, rebreathing carbon dioxide reduces available oxygen, and deaths have been reported where the cause was cardiac or asthmatic. Slow exhaling, four in and six to eight out, is safe and works.
Does buspirone help panic attacks?
No. Buspirone is useful in generalised anxiety, but in trials specifically in panic disorder it did not beat placebo. SSRIs, venlafaxine and the older tricyclics clomipramine and imipramine are the medicines with evidence in panic.
What is interoceptive exposure?
Deliberately producing the feared sensations, such as spinning to cause dizziness or breathing through a straw to cause breathlessness, repeatedly until the brain stops treating them as dangerous. It is the component that makes cognitive behavioural therapy for panic so effective.
Does caffeine really matter?
More than most people expect. In laboratory challenge studies caffeine provokes panic attacks in a large proportion of people with panic disorder while having little effect on others. A full two-week trial without any caffeine is one of the highest-yield things to try.
Why do I wake at 4 am with a racing heart?
Often alcohol rebound: the calming effect wears off after six to eight hours and leaves a surge of arousal. Nocturnal panic attacks also occur without alcohol, waking a person from sleep in full panic, and they are not nightmares.
Can I stop the tablets once I feel better?
Not abruptly, and not early. Treatment continues at least twelve months after response because early stopping has a high relapse rate, then is tapered in small steps over weeks. Discontinuation symptoms are often mistaken for relapse, particularly with paroxetine and venlafaxine.
📑 Sources and editorial
- Guidelines on the treatment of panic disorder, covering first-line SSRIs, dose initiation and treatment duration
- The cognitive model of panic disorder and randomised trials of cognitive behavioural therapy including interoceptive exposure
- Prescribing information for escitalopram, sertraline, paroxetine, citalopram, fluvoxamine and venlafaxine, including the citalopram QT dose restriction
- Trials of buspirone in panic disorder showing no advantage over placebo
- Research on benzodiazepines and the impairment of extinction learning during exposure therapy
- Caffeine challenge studies in panic disorder
- Reports of harm from paper bag rebreathing in undiagnosed cardiac and respiratory presentations
- Related products: Lexapro (Escitalopram), Sertafine (Sertraline), Paxil (Paroxetine), Effexor (Venlafaxine), antidepressants category
- RXshop Editorial Team — reviewed by Thomas Walsh, MD — Psychiatrist & Mental Health Specialist
Medical Disclaimer: The information in this article is for educational and informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek guidance from a qualified healthcare provider with any questions you may have regarding a medical condition, and before starting, stopping or changing any medication.