About Scars
Any time there is injury to tissue, there will be inflammation followed by cell growth to repair the tissue and later remodeling of the wound as time goes on. Scar formation is a complex process that is affected by many variables. All wounds will have a scar. How the scar appears after the healing process depends on many factors.
Non-modifiable risk factors for scars include factors that cannot be changed or controlled. These include genetic factors that may lead to over production of cells and the formation of large scars and in some cases, keloids (scars that keep growing and can look like growths).
Modifiable risk factors for scars are factors that can be changed or controlled through interventions and lifestyle changes. Some modifiable risk factors that affect how wounds health include smoking and sun exposure. Sun exposure is known to cause darker pigmentation of the scar than if the wound was not exposed to the sun. If the wound is in an area where it is stretched during healing (over a joint), it can lead to worsening scarring.
In summary, the extent of scarring is related to both genetics and modifiable factors.
The most common early symptoms of scars can vary depending on the type of scar. Here are some common early symptoms:
- Redness: Scars often appear red or pink in the early stages of healing. This is due to increased blood flow to the area as part of the natural healing process.
- Itching: It is common for scars to itch during the healing process. This itching sensation can be mild to severe and may cause discomfort.
- Sensitivity: Scars can be sensitive to touch, especially in the early stages. Even gentle pressure or clothing rubbing against the scar may cause discomfort or sensitivity.
- Swelling: Swelling is another common early symptom of scars. The surrounding tissue may become slightly swollen as part of the body's response to injury and healing.
As scars progress or become more severe, additional symptoms may occur:
- Thickening or Raised Appearance: Some scars may become thicker or raised over time. This can happen due to an overproduction of collagen during the healing process.
- Hardness or Firmness: Scar tissue can feel harder or firmer compared to the surrounding healthy skin. This change in texture is a result of the body's attempt to repair and rebuild damaged tissue.
- Tightness: As scars mature, they may cause a feeling of tightness in the area. This tightness can restrict movement and flexibility, particularly if the scar is located near a joint.
- Discoloration: Scars may change in color over time, becoming lighter or darker than the surrounding skin. This discoloration is caused by changes in pigmentation during the healing process.
- Pain or Discomfort: In some cases, scars can be painful, especially if they are large or located in sensitive areas of the body. The pain may range from mild discomfort to sharp or stabbing sensations.
To diagnose scars, doctors typically rely on a thorough history taking and dermatological examination. They will also evaluate the severity of the scars using a grading system that uses specific criteria to assess the severity of scars.
It's important to note that diagnosing scars is primarily done through visual examination and evaluation. There are usually no specific laboratory tests or imaging studies required for diagnosis.
The goals of treatment for scars are to reduce inflammation, improve the appearance of the scar, minimize symptoms such as pain and itching, and improve overall function and quality of life. There are various treatment options available to achieve these goals. Here are some of the medication types, therapeutic procedures, lifestyle behavior changes, and other treatments recommended:
Lifestyle behavior changes:
- Sun protection: Protecting your scar from sun exposure is crucial as UV rays can cause discoloration and make scars more noticeable. Use sunscreen with a high SPF and cover the scar with clothing or a bandage when outdoors.
- Healthy diet: Eating a balanced diet rich in vitamins, minerals, and antioxidants can support skin health and promote healing.
- Keeping the wound clean and moisturized will help shorten healing time and lessen the chance of excessive scarring.
Medications: These treatments are usually reserved for the treatment of hypertrophic scars and keloids.
- Topical corticosteroid creams or ointments: These medications can be applied directly to the scar to reduce inflammation and promote healing.
- Intralesional steroid injections: Steroids are injected directly into the scar to reduce inflammation and decrease the proliferation of fibroblasts and collagen synthesis. However, common side effects include atrophy (thinning of the skin) and telangiectasia (dilation of small blood vessels). Other injections including botulinum toxin and chemotherapy drugs such as fluorouracil and bleomycin have been shown to be effective in some cases.
- Silicone gel sheets or gels: Silicone products create a protective barrier over the scar, helping to flatten and soften it over time.
- Onion extract: Topical creams or gels containing onion extract may help improve the appearance of scars by reducing redness and promoting collagen remodeling.
Therapeutic procedures:
- Dermabrasion: This procedure involves removing the top layer of skin using a rotating brush or diamond wheel. It helps to smooth out the surface of the scar.
- Micro-needling: Tiny needles are used to create controlled micro-injuries in the skin, stimulating collagen production and improving the texture of the scar.
- Laser therapy: Different types of lasers can be used to target specific components of the scar tissue, such as redness or pigmentation.
- Cryotherapy: Freezing the scar tissue with liquid nitrogen can help reduce its size and improve its appearance.
Other treatments:
- Surgical revision or excision: In some cases, surgical removal or revision of a scar may be recommended. This procedure aims to reduce tension on the skin and improve its appearance. However, results may vary, especially for keloid scars which have a higher recurrence rate.
- Radiation therapy: If a keloid is surgically removed, radiation to the area may be recommended to prevent recurrence.
- Psychological support: Scars can have a significant impact on a person's self-esteem and mental well-being. Seeking support from a mental health professional or joining a patient support group can help individuals cope with any emotional distress caused by their scars.
It's important to note that treatment options may vary depending on factors such as the type, size, location, and severity of the scar. It's best to consult with a healthcare professional who can assess your specific situation and recommend an appropriate treatment plan for you.
The natural progression of scars can vary depending on the type and severity of the scar. In general, scars tend to go through a healing process over time. Initially, scars may appear red, raised, and firm. As the healing process continues, scars typically become flatter, lighter in color, and more pliable. This regression of scars can take several years.
However, it's important to note that not all scars regress naturally. Hypertrophic scars are known to regress over time and become flatter and more pliable. On the other hand, keloid scars may appear many years after the injury and extend beyond the site of injury. Keloid scars are raised reticular dermal lesions that spread beyond the original wound and invade the surrounding healthy skin. Unlike hypertrophic scars, keloid scars do not tend to regress spontaneously.
Complications of scars can vary depending on various factors such as the location and severity of the scar. Some common complications that can occur with scars include:
- Contracture: Scar contracture is one of the most common complications of burns. It commonly occurs in areas around joints, leading to limited range of motion and functional limitations.
- Infection: Scars can be susceptible to infection, especially if they are not properly cared for or if there is underlying wound breakdown.
- Malformation: Scars in certain areas such as the face or hands can lead to malformation or distortion of normal anatomical structures.
- Adhesion: Scars can cause adhesions between different layers of tissue or organs, leading to restrictions in movement or function5.
- Delayed wound closure: In some cases, scars may take longer to heal or close completely, leading to delayed wound closure.
It's important to remember that each person's experience with scarring is unique, and treatment outcomes can vary. It's always best to consult with a healthcare professional who can evaluate your specific situation and recommend appropriate treatment options.