Why do wounds start itching when they're almost healed?

Why do wounds start itching when they're almost healed? Have you ever noticed that when you get injured and bleed, it just hurts, but after a few days, when the wound starts to scab over, it becomes itchy and makes you want to pick at the scab? This is actually related to the body's healing process. After an injury, the body initiates an inflammatory response to clear out damaged tissue, and then new skin cells gradually grow to repair the injured area. During this process, immune cells release various chemical substances that can stimulate the nerves in the skin, causing itchiness. Additionally, as the wound heals, the new skin is more sensitive, and the surrounding skin might also itch due to dryness or tightness. These factors combined can make it feel like the wound becomes itchier the closer it gets to healing. However, an itchy wound doesn't necessarily mean it's healing smoothly. If you also experience expanding redness, increased pain, pus discharge, or fever, be cautious of infection and consider seeking medical attention. Most importantly, don't forcibly pick off scabs just because they're itchy. Doing so can cause re-bleeding, prolong healing time, and increase the chance of scarring. So, while wound itching can be part of the healing process, resisting the urge to scratch is key to helping it heal properly.