Þórr

ärr is the Swedish term for a scar, a persistent mark left on the skin after the healing of a wound. In general, a scar results from the replacement of normal skin with fibrous connective tissue during repair. The appearance and texture depend on the wound’s depth, location, skin type, and individual healing response.

Causes commonly include cuts, surgical incisions, burns, infections, and severe acne. Most scars mature over months to years, becoming less noticeable, yet many never completely disappear. The cosmetic and functional impact varies with size and placement.

Types commonly discussed are hypertrophic scars, which stay within the boundaries of the original wound and may be raised; keloids, which extend beyond the wound area; and atrophic scars, which are sunken or pitted. Burns can produce contractures, which may limit movement if extensive.

Biology and healing: scar tissue is rich in collagen and lacks the normal skin architecture. The remodeling phase can continue for years, gradually altering strength, texture, and color.

Management and treatment: approaches aim to improve appearance or function rather than restore perfectly normal skin. Common options include silicone gel sheets or gels, pressure therapy for certain burn scars, corticosteroid injections for raised scars, and various dermatologic procedures such as laser therapy, microneedling, dermabrasion, or surgical revision in select cases. Outcomes vary by individual and scar type.

Etymology and usage: ärr is the native Swedish word for scar, used in medical and everyday language to describe the result of tissue repair after injury.