sunburn is an acute inflammatory injury to the skin caused by ultraviolet (UV) radiation exposure. It most often follows sun exposure but can also occur after artificial UV sources such as tanning devices. In cosmetic and reconstructive care, sunburn is discussed because it affects skin healing, pigment, and timing of procedures. Clinicians also evaluate sunburn to distinguish it from other rashes, burns, and photosensitivity reactions.

actinic cheilitis is a sun-related, chronic inflammatory and precancerous change of the lip, most often the lower lip. It develops after repeated ultraviolet (UV) exposure that damages the lip’s surface (vermilion) over time. Clinically, it is a diagnosis used in dermatology, oral medicine, and head-and-neck care to describe a “sun-damaged lip” with potential for dysplasia. It is relevant to both reconstructive and cosmetic practice because evaluation and treatment can affect lip contour, texture, and the vermilion border.

cheilitis is inflammation of the lips, most often affecting the vermilion (the pink lip) and the lip corners. It is a clinical term used across dermatology, dentistry, and primary care to describe several lip conditions with different causes. In cosmetic and plastic surgery contexts, cheilitis matters because active lip inflammation can change appearance, comfort, and healing around lip procedures. It can be acute (short-lived) or chronic (persistent or recurring), depending on the trigger and underlying diagnosis.

angular cheilitis is inflammation and breakdown of the skin at the corners of the mouth (the oral commissures). It commonly appears as redness, cracking, scaling, or painful fissures at one or both mouth corners. It is a clinical diagnosis used in general dermatology, dentistry, and primary care, and it also matters in cosmetic and reconstructive facial care. In aesthetic practice, it may be discussed when perioral volume, denture fit, saliva pooling, or post-procedure irritation affects the mouth corners.

periorbital dermatitis is inflammation of the skin around the eyes, including the upper and lower eyelids. It commonly presents with redness, scaling, dryness, swelling, itching, or burning in the periorbital (eye-adjacent) area. It is a clinical umbrella term used in medical dermatology and ophthalmology to describe several possible dermatitis patterns affecting eyelid skin. It is relevant in both cosmetic and reconstructive contexts because the eyelid region is highly visible and frequently exposed to products and procedures.

perioral dermatitis is an inflammatory facial rash that most often appears around the mouth. It typically presents as small red bumps (papules) and sometimes pustules on irritated skin. It is discussed in both medical dermatology and aesthetic (cosmetic) practice because it affects facial appearance and may flare with certain skincare or procedures. Despite the name, it can extend beyond the mouth to the nose or eyes in some cases.

striae albae are mature stretch marks that appear pale, white, or silvery. They represent later-stage skin changes after earlier red or purple stretch marks fade. They are commonly discussed in cosmetic dermatology and plastic surgery consultations. They may also be noted in reconstructive planning when skin quality affects incision placement or healing expectations.

striae rubrae are early-stage stretch marks that appear pink, red, or violaceous. They reflect recent skin stretching with visible superficial blood vessels and mild inflammation. The term is used in dermatology and cosmetic medicine to describe a time-sensitive phase of striae. It is most commonly discussed in cosmetic contexts, but it can also appear in medical and reconstructive settings.

stretch marks are linear skin changes (also called *striae distensae*) that develop when the dermis is stretched faster than it can adapt. They often start as pink, red, or purple lines and may fade over time to lighter, thinner streaks. They are common on the abdomen, breasts, hips, buttocks, thighs, and upper arms. They are primarily addressed in cosmetic care, but they can also be relevant in reconstructive contexts (for example, when planning body-contouring surgery).

A hyperpigmented scar is a scar that appears darker than the surrounding skin due to increased visible pigment. It is commonly discussed in cosmetic dermatology and plastic surgery because it affects how noticeable a scar looks. It can occur after surgery, trauma, burns, acne, or inflammatory skin conditions. It may be seen in both cosmetic and reconstructive settings, especially when scar blending and symmetry are goals.

A hypopigmented scar is a scar that appears lighter than the surrounding skin. It reflects reduced visible pigment (melanin) in the healed area. It can follow surgery, injury, burns, acne, or inflammatory skin conditions. The term is used in both cosmetic and reconstructive settings to describe scar color mismatch.

An atrophic scar is a depressed scar that sits below the surrounding skin surface. It forms when the skin does not rebuild enough collagen during healing. It is commonly discussed in cosmetic dermatology and plastic surgery because it affects skin texture and light reflection. It can also be relevant in reconstructive care when scarring changes contour or function.

rolling scars are a type of atrophic (depressed) scar that creates a soft, wavy, “rolling” texture on the skin. They are commonly associated with past acne and appear most often on the cheeks, jawline, and temples. They form when fibrous bands tether the skin down to deeper tissue, creating shallow, broad depressions. The term is used in cosmetic dermatology and plastic surgery to describe scar shape and guide treatment planning.

boxcar scars are a type of atrophic (depressed) scar with relatively sharp edges and a flat-looking base. They are commonly associated with inflammatory acne but can also follow other skin injuries. The term is used in cosmetic and dermatologic evaluation to describe scar shape and depth. They matter in both cosmetic care (appearance) and reconstructive planning (texture and contour).

ice pick scars are narrow, deep, pitted scars most commonly left behind after inflammatory acne. They often look like tiny “puncture” marks with a small surface opening and depth extending into the dermis. The term is used in cosmetic dermatology and plastic surgery to classify acne scarring patterns and plan treatment. They are primarily an aesthetic concern, but they can also affect texture, makeup wear, and perceived skin quality.

acne scarring is long-lasting skin change that remains after inflammatory acne has healed. It can involve texture changes (indentations or raised areas) and sometimes color change. It is commonly addressed in cosmetic dermatology and aesthetic plastic surgery. In some cases, it is also managed in reconstructive settings when scarring affects function or causes significant contour distortion.

A post-surgical scar is the visible (or sometimes hidden) mark left after an incision heals. It forms when the body repairs skin and deeper tissues that were cut or lifted during surgery. It is common after cosmetic procedures (such as facelifts or tummy tucks) and reconstructive surgeries (such as breast reconstruction). Its appearance and feel can change for months as the scar matures.

A burn scar is a lasting change in skin and sometimes deeper tissue that forms after a burn injury heals. It can appear raised, tight, discolored, uneven, or thicker than surrounding skin. It may also limit movement when it crosses joints or pulls on nearby structures (a “contracture”). burn scar evaluation and treatment are used in both reconstructive and cosmetic care.

scar contracture is a type of scarring where the scar tightens and shortens, pulling nearby skin and soft tissue. It can limit movement, change shape or symmetry, and affect comfort or function. It is most often discussed in reconstructive care (for burns and trauma) and also appears in cosmetic and plastic surgery follow-up. The term describes a clinical problem, not a single procedure.

molluscum contagiosum is a common viral skin infection that causes small, smooth, dome-shaped bumps. It is caused by a poxvirus and spreads through direct skin contact and contaminated objects. It is most often discussed in dermatology and primary care, but it also matters in cosmetic and reconstructive settings when lesions appear on visible or procedure-treated areas. In aesthetic medicine, it may be evaluated because it can mimic other “bumps” and can affect treatment timing and infection-control planning.