Restless Legs and Akathisia from Medications: How to Tell Them Apart and What to Do

When you start a new medication-especially an antipsychotic-you expect it to help your mood, thoughts, or behavior. You don’t expect to feel like you’re being pulled apart from the inside. That’s what many people describe when they develop akathisia: a crushing, unbearable urge to move, often in the legs, that doesn’t go away no matter how much they shift, pace, or stretch. It’s not just restlessness. It’s agony. And it’s frequently mistaken for anxiety, agitation, or worsening mental illness.

At the same time, another condition called restless legs syndrome (RLS) can mimic akathisia. Both make your legs feel wired, twitchy, or aching. But they’re not the same. And confusing them can lead to dangerous mistakes-like doubling your dose of an antipsychotic when you should be stopping it. This isn’t rare. Studies show up to half of people with medication-induced akathisia are misdiagnosed. The result? Increased risk of suicide, violence, or complete treatment failure.

What Is Akathisia, Really?

Akathisia isn’t just "feeling jittery." It’s a specific movement disorder caused by drugs that block dopamine in the brain. First identified in the 1950s, it’s now one of the most common side effects of antipsychotics. People on haloperidol, risperidone, or even metoclopramide (a stomach drug) are at risk. The key trigger? Starting, increasing, or suddenly stopping these medications.

It shows up fast-usually within days or weeks. You feel an inner tension, like your nerves are buzzing under your skin. You can’t sit still. You cross and uncross your legs. You rock. You shift your weight. You pace. It’s not voluntary. It’s not boredom. It’s a desperate, physical need to move. One patient described it as, "You ache with restlessness, so you feel you have to walk. And then as soon as you start pacing, the opposite occurs to you; you must sit and rest. Back and forth, up and down you go… you cannot get relief."

What makes akathisia dangerous is how often it’s misread. Doctors see someone fidgeting, pacing, or seeming "anxious" and assume their psychosis is getting worse. So they increase the antipsychotic dose. That makes akathisia worse. And worse. And worse. In one documented case, a patient on haloperidol developed acute suicidal thoughts-directly tied to akathisia. The doctor doubled the dose. The patient’s distress spiked. Only after the family insisted on a second opinion did the real cause emerge.

Restless Legs Syndrome: The Look-Alike

Restless legs syndrome feels similar: tingling, crawling, aching in the legs. But here’s the difference:

• RLS happens mostly at night or during rest. Akathisia hits anytime-especially while sitting.
• RLS improves with movement. Akathisia gets worse with movement, but you can’t stop moving because the discomfort is unbearable.
• RLS often runs in families or links to low iron. Akathisia links directly to medication timing.
• RLS responds to dopamine-boosting drugs like levodopa. Akathisia gets worse with them.

One person told me: "I thought I had RLS because my legs felt awful at night. But when I started risperidone, it got ten times worse during the day. That’s when I looked it up."

That’s the pattern. If your restlessness started or worsened after beginning a new medication, especially an antipsychotic, akathisia is far more likely than RLS. And if your doctor says, "It’s just anxiety," ask: "Could this be akathisia?"

How to Spot It-Before It’s Too Late

Clinicians use the Barnes Akathisia Rating Scale (BARS) to measure it. But you don’t need a scale to start asking questions. Here’s what to look for:

1. Did symptoms start within 4 weeks of starting or increasing a medication?
2. Do you feel an inner, unbearable urge to move-even if you’re not physically restless?
3. Do you pace, rock, shift weight, or constantly adjust your legs while sitting?
4. Does the feeling get worse when you try to sit still?
5. Did your doctor increase your antipsychotic dose because you seemed "more agitated"?

If you answered yes to most of these, you’re likely dealing with akathisia. And if you’re on a first-generation antipsychotic like haloperidol, your risk is even higher. Second-generation drugs like quetiapine or olanzapine carry lower-but still real-risk.

What Happens If You Ignore It?

Ignoring akathisia isn’t just uncomfortable-it’s life-threatening.

• It’s linked to suicidal thoughts in 15-20% of cases.
• It can trigger aggression, outbursts, or self-harm.
• It causes 15% of people to stop their antipsychotic entirely, often without medical support.
• Some patients say the distress of akathisia is worse than their original psychosis.

A 2022 survey of 1,247 antipsychotic users found 68% were initially told their restlessness was "anxiety." Of those, 42% had their medication dose increased-making things far worse. One woman said, "They kept telling me I was paranoid. I wasn’t. I was in agony."

The longer it goes untreated, the harder it is to reverse. Chronic akathisia can last months or years. Tardive akathisia may appear even after stopping the drug. That’s why early recognition saves lives.

How to Treat It

The first rule: Don’t add more medication to fix it. That’s the trap.

Here’s what actually works:

• Reduce or stop the drug. If possible, taper the antipsychotic slowly. Haloperidol, for example, should be reduced over 3 days. This resolved symptoms in 80% of cases in clinical reports.
• Add propranolol. A beta-blocker like propranolol (10-60 mg daily) is the most studied treatment. It reduces inner restlessness and physical agitation.
• Try clonazepam. A low dose (0.5-2 mg nightly) can help, especially for sleep disruption.
• Use cyproheptadine. An antihistamine that blocks serotonin, sometimes used off-label with success.

Important: Avoid dopamine agonists like levodopa. They help RLS but make akathisia worse. Don’t treat akathisia like RLS.

For people who can’t stop their antipsychotic-say, because they have severe schizophrenia-doctors may add propranolol or clonazepam while keeping the antipsychotic. It’s not ideal, but it’s better than worsening the condition.

What’s New in Treatment?

Research is moving fast. In 2023, a new drug called pimavanserin (Nuplazid), originally for hallucinations in Parkinson’s, showed a 62% reduction in akathisia symptoms in a clinical trial. It’s not FDA-approved for this yet, but it’s being studied.

Non-drug approaches are also emerging. A 2024 pilot study at Harvard tested transcranial magnetic stimulation (TMS) on akathisia patients. Early results showed reduced restlessness after just five sessions.

And technology is helping. The Akathisia Recognition and Management App, launched in 2023 by the Movement Disorder Society, gives clinicians a quick checklist and treatment guide right on their phone. Stanford’s AI tool can now detect akathisia from video calls with 89% accuracy-meaning telehealth patients won’t be missed.

What to Do If You Suspect It

If you’re on an antipsychotic and feel this kind of inner torment:

1. Write down exactly when the symptoms started-date and time.
2. Track what makes it better or worse. Does sitting make it worse? Does walking help temporarily?
3. Print out the Barnes Akathisia Rating Scale (available online) and bring it to your doctor.
4. Ask: "Could this be akathisia? I’ve read it’s common with antipsychotics."
5. If your doctor dismisses you, ask for a referral to a movement disorder specialist or psychiatrist with experience in side effects.

Don’t wait. Don’t assume it’s "just anxiety." This is a medical emergency disguised as a mood issue.

Why This Matters Beyond the Individual

Only 37% of U.S. psychiatric clinics routinely screen for akathisia. Most EHR systems don’t even have a checkbox for it. That’s not negligence-it’s ignorance. And it’s costing lives.

Pharmaceutical companies are starting to respond. New drugs like lumateperone (Caplyta) have akathisia rates under 4%, compared to 14% for older drugs. That’s progress. But until every prescriber learns to recognize this, patients will keep suffering.

Education is the missing link. Medical schools barely teach akathisia. Primary care doctors don’t know it exists. Patients are left to Google it themselves-like the Reddit user who found the answer on Wikipedia after being told it was "just anxiety."

It doesn’t have to be this way. Akathisia is recognizable. It’s treatable. And when caught early, it can vanish in days.