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After sustaining an injury it is important to not make the situation worse when trying to treat it. Bandaging a sprain or cut improperly can restrict blood and oxygen flow, causing weakness in limbs, numbness, increased pain and much more. Improper treatment of an injury can often be worse than the injury itself. Applying a bandage is a first aid technique that is very commonly done incorrectly.
When applying a bandage you need to check circulation just above and below the injured area. If the bandage is on the wrist/forearm area, for example, check the hand and the elbow. Press your finger into these areas until the skin turns white. If color does not come back to the target area immediately the bandage is too tight. Reapply it, looser this time.
If you experience any tingling sensations, numbness or increased pain, or if your skin turns unusual shades like purple or red or unnaturally pale, these are also signs the bandage may be too tight.
Whenever any of these warning signs present themselves, adjust the bandage so it is looser and does not restrict circulation. Regularly check circulation when you have a bandage on to make sure no further damage is done. If the symptoms persist after loosening the bandage, call your doctor for further advice.