Scar tissue is structurally different from normal skin, and that difference is the root cause of most scar pain. Whether your scar is weeks old or years old, several mechanisms can make it tender, achy, or sharply sensitive to touch. The good news: most scar pain is a normal part of healing, and there are practical ways to reduce it.
Scar Tissue Is Stiffer Than Normal Skin
When your body repairs a wound, it lays down collagen fibers quickly rather than carefully. The result is a dense, disorganized network of tissue that lacks the flexibility of the skin it replaced. Scar tissue is roughly four times stiffer than healthy skin, measuring about 3.0 N/mm of resistance compared to 0.75 N/mm in undamaged skin. That stiffness matters because your skin is constantly under tension from everyday movement. When a rigid scar gets pulled and stretched by the softer tissue around it, you feel it as tightness, tugging, or outright pain.
The cells responsible for this are called myofibroblasts. During healing, normal skin cells transform into these specialized repair cells, which grab onto the surrounding tissue and physically contract the wound closed. That contraction is useful at first. But when it continues after the wound has already closed, the scar becomes excessively tight. Scars over joints or in areas that move a lot (your hands, shoulders, knees) tend to hurt more for exactly this reason: every bend or stretch pulls against a patch of tissue that doesn’t want to give.
Your Scar May Still Be Remodeling
Scar remodeling begins around four weeks after injury and continues for nine to twelve months. During this phase, your body is slowly breaking down and reorganizing collagen fibers to strengthen the new tissue. Pain, itching, and sensitivity during this window are common and expected. The scar is still actively changing.
What catches people off guard is how long this takes. A scar that still aches at six months isn’t necessarily a problem. It’s often still in the middle of its remodeling process. The tissue is gradually softening and reorganizing, and discomfort typically fades as that process finishes. If your scar is less than a year old and the pain hasn’t been getting progressively worse, it’s likely still settling down on its own.
Raised Scars Are More Likely to Hurt
Not all scars cause the same level of discomfort. Two types are particularly prone to pain and itching: hypertrophic scars and keloids.
- Hypertrophic scars are red, raised, and stay within the boundaries of the original wound. They often cause pain and intense itching, but they typically improve within 12 to 24 months. Scars over joints can also restrict movement during this period.
- Keloid scars grow beyond the edges of the original wound, sometimes significantly. They can be painful, itchy, and tend not to improve on their own over time.
Both types contain higher numbers of mast cells, the immune cells that release histamine. Histamine is the same compound that makes bug bites itch and allergic reactions flare. Studies comparing burn patients with and without itching found that those with more itching had significantly more mast cells in their scar tissue, along with more severe scarring overall. This ongoing low-level immune activity is a major driver of both the itch and the ache that many people feel in raised scars.
Nerve Damage and Hypersensitivity
When skin is cut or burned, the tiny nerve endings in that area are damaged too. As they regenerate, they don’t always reconnect correctly. Some nerve fibers become hyperactive, firing pain signals in response to light touch, temperature changes, or pressure that wouldn’t bother normal skin. This is why a healed scar can feel disproportionately painful when you brush against it or when the weather shifts.
Scars from surgery are especially prone to this because the incision cuts cleanly through layers of nerve-rich tissue. The resulting hypersensitivity can persist for months or, in some cases, longer. It’s not a sign that something has gone wrong with healing. It’s a sign that your nerves are still recalibrating.
When Pain Signals a Problem
Most scar pain is benign, but certain symptoms point to infection or complications that need attention. Watch for pain that is getting progressively worse rather than gradually fading. Other warning signs include fever or chills, green, yellow, or brown discharge from the scar, a foul smell coming from the area, increasing redness or swelling that spreads outward, and nausea or vomiting. A wound that was improving and then suddenly becomes more painful is a red flag. Normal healing moves in one direction: toward less pain, less redness, and less swelling.
Steroid Injections for Persistent Pain
For scars that remain painful well past the remodeling window, particularly keloids and stubborn hypertrophic scars, corticosteroid injections are one of the most well-studied treatments. A doctor injects a small amount of steroid directly into the scar tissue, which reduces inflammation, softens the collagen, and relieves both pain and itching. A large meta-analysis of clinical trials found strong evidence for pain and itch relief with this approach, with treated patients showing significantly better outcomes than control groups. Most people need a series of injections spaced over weeks or months, though the exact schedule varies.
Desensitization You Can Do at Home
If your scar is healed but hypersensitive to touch, a structured desensitization program can retrain those overactive nerve endings. The goal is to gradually expose the scar to increasing levels of stimulation so the nervous system learns to stop treating normal contact as a threat. For best results, aim for three to four sessions a day, each lasting up to 10 minutes. If any technique feels too painful, use less pressure or take a break.
Texture Massage
Gather several materials of different roughness: cotton, a soft cloth, a towel, denim. Start by rubbing the softest texture gently over the scar for about two minutes. Move to a slightly rougher texture for another two minutes, and continue progressing until you reach one that feels uncomfortable. Stop just before that point. The goal is to always finish on a texture your skin can tolerate, and to push that boundary a little further each day.
Tapping
Using your fingertip or a light object like a pencil, tap the most sensitive spot on or near the scar lightly and rapidly, about two to three taps per second. Continue for two minutes or until the sensation starts to change or the area begins to feel numb. Take a short break, then repeat.
Friction Massage
Press the tip of one finger firmly against the scar. Without sliding across the skin, push gently from side to side, holding each end position for five seconds. Repeat in the other direction. If the scar is wider than your fingertip, work your way along every section. Continue for several minutes. This helps break up adhesions in the scar tissue and reduces the pulling sensation many people feel.
Everyday Desensitization
You can also work desensitization into your daily routine. Rub the sensitive area with a washcloth or towel during a shower. Run your hand over the different textures of your clothing when you get dressed. If the scar is on your hand, try washing dishes by hand and letting the warm water and varied surfaces do some of the work for you. These small, repeated exposures add up over time and help normalize sensation in the area.
Why Old Scars Sometimes Start Hurting Again
A scar that was pain-free for years can flare up for several reasons. Weight gain or loss changes the tension on surrounding skin, which pulls on the rigid scar differently. Hormonal shifts, particularly during pregnancy, can reactivate collagen remodeling. Cold, dry weather reduces skin elasticity, making stiff scar tissue feel tighter. And repetitive strain from a new exercise routine or physical job can irritate a scar that sits over a frequently used muscle or joint. In most cases, the flare is temporary and responds well to gentle massage and moisturizing to restore some flexibility to the tissue.