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🏥 Gotokuji Orthopedic Clinic / Patient Guide

Icing or Heating? First Aid Basics

Icing or Heating
Getting initial injury care wrong can slow your recovery

❓How Do You Decide: Ice or Heat?

Have you ever been unsure whether to ice or heat an injury?
The basic rule is simple: Swollen and hot → Ice. Stiff but not hot → Heat.
Getting this wrong can delay recovery or make symptoms worse.
For acute swelling and heat, use cold. For chronic stiffness, use heat.
More recent approaches such as POLICE and PEACE & LOVE emphasise protecting the injury while also starting gentle, pain-free movement early, and they treat icing mainly as a way to ease pain.

⚙️Decision Flowchart
1
Touch the injured area

Is it swollen? Hot? Red? Throbbing? → YES means "Ice it"

2
No heat, but stiff or tight?

Not hot but hard to move, muscles feel stiff → "Heat it"

3
Pain or swelling right after exercise?

Swelling or pain right after exercise → "Ice first." Pre-exercise warmup → "Heat"

4
48-72 hours after injury is the turning point

Use cold for the first 48-72 hours. Once heat and swelling subside, switch to heat

🔍When to Use Which
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Right after a sprain or bruise → Ice
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Chronic shoulder or back stiffness → Heat
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Swelling or pain after exercise → Ice
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Warming up before rehab → Heat
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Acute low back pain → Ice first, then switch to heat once the warmth subsides
💊How to Do It Right
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How to Ice
Apply an ice bag or ice pack wrapped in a thin towel for 15-20 minutes, repeating every 1-2 hours
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How to Heat
Use a warm bath, hot towel, or heat pad (not directly on skin) for 10-20 minutes at a comfortable warmth
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Limit Icing to 30 Minutes
Continuous icing beyond 30 minutes risks frostbite. Always take breaks
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Avoid Excessive Heat
Areas with reduced sensation are at risk for low-temperature burns. Comfortably warm is the right level
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Cold vs. Hot Patches
Cold patches for acute injuries, hot patches for chronic pain. NSAID patches can also help reduce inflammation. Ketoprofen patches (e.g. Mohrus Tape) can cause photosensitivity — keep the area covered from sunlight while using them and for at least 4 weeks after removal, whatever the weather
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When to Switch
Once swelling and heat subside, switch from cold to heat. Typically 48-72 hours after injury
📈Summary
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When in doubt: "Swollen and hot → Ice" / "Stiff → Heat"

Correct first aid matters a great deal for how your recovery goes. Icing during the first 48-72 hours after an injury is done mainly to ease pain and limit swelling (not for long sessions or over many weeks). Heat improves blood flow and makes rehabilitation and stretching easier to do. If you are unsure, consult an orthopedic specialist.

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See a doctor right away if:
You have swelling so severe you cannot bear weight, spreading bruising, a joint that locks up, pain that keeps you from sleeping, or symptoms with fever. These may indicate a fracture or ligament tear. Do not rely on icing or heating alone -- get medical attention promptly.

🏠First Aid Tips

💡 Four Rules to Remember

  • Swollen and hot → Ice (15-20 minutes of icing)
  • Not hot but stiff → Heat (warm towel or bath for 10-20 minutes)
  • Never apply ice directly -- always use a towel as a barrier
  • Do not apply heat while swelling and warmth are still present (from the injury through the first few days) -- heat can make swelling and pain worse
  • If you are unsure or pain does not go away, see an orthopedic specialist

🩻 Gotokuji Orthopedic Clinic

We support you from initial injury care through treatment and rehabilitation

📞 03-5451-7878

Weekdays 9:00-12:00 / 14:30-18:30　Sat AM only
5 min walk from Gotokuji Sta. (Odakyu) / Yamashita Sta. (Tokyu Setagaya)