What to Do When Your Back "Goes Out"

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One minute you're moving normally — and the next, a sharp pain or muscle spasm stops you cold. (And it's never anything heroic. It's almost always picking up a sock.)

Suddenly everything feels tight, guarded, and terrifying. Every movement becomes a question: Is this going to make it worse? This is one of the most common reasons people seek physical therapy for low back pain — and something I see regularly here in Truckee.

The most instinctive response? Stop moving entirely. Rest until it passes. But while that impulse makes complete sense in the moment, it's usually not what helps you recover — and can actually work against you.

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Why Complete Rest Can Backfire

During a low back pain flare-up, your nervous system shifts into a protective state. Movements that felt completely normal before can suddenly register as threatening — even when there's no serious structural injury involved.

So you rest. You avoid bending, lifting, walking. You try not to "do anything wrong." But here's the problem: avoiding movement entirely can actually prolong your symptoms. The longer your body stays in that guarded, protective state, the more sensitive it becomes — and the longer your pain tends to stick around.

What to Do Instead

Find movements that feel better — and keep doing them

You don't need to push into pain. But you also don't want to shut down completely. Start with what feels tolerable — or even slightly relieving. Small shifts in how you move can make a meaningful difference:

These aren't workarounds. They're your body's path back to feeling normal.

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The Nervous System's Role in Your Recovery

A central piece of recovering from a low back flare-up is helping your nervous system feel safe again. When you move in ways that feel manageable, you're sending your brain a signal: "This is okay. We're not in danger."

That signal has real, measurable effects:

• Reduced muscle guarding and spasm
• Decreased pain sensitivity over time
• Faster return to normal function
• Less fear around movement — which itself speeds recovery

Avoiding movement, on the other hand, reinforces the story that your back is injured or fragile — and that story can keep pain lingering long after the initial flare has settled.

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Why Movement Is (Usually) Good Medicine

Your back responds well to appropriate movement. Even gentle, low-load activity can improve blood flow to the area, reduce stiffness, ease muscle tension, and support a faster recovery. The goal isn't to push through pain — it's to stay within a range that feels safe and tolerable, and build from there.

Think of movement not as a risk, but as a resource.

This small shift in thinking can change your entire trajectory during a flare-up. It keeps you active, reduces fear, and moves you toward recovery rather than away from it.

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When to Work With a Physical Therapist

Sometimes low back pain needs more than patience and gentle movement. Consider scheduling an evaluation if:

• Your pain keeps coming back, even after it settles
• Symptoms aren't improving after a couple of weeks
• You're experiencing radiating symptoms down one or both legs — like pain, tingling, or numbness
• Everyday movement — getting dressed, walking, sitting — still feels significantly limited

A physical therapist can help you understand the why behind what's happening — and put together a clear plan to move forward, not just manage symptoms.