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.

verruca vulgaris is the medical term for a “common wart.” It is a benign (non-cancerous) growth of skin caused by certain types of human papillomavirus (HPV). It most often appears on the hands, fingers, knees, and other areas prone to minor trauma. It is relevant in both cosmetic care (appearance-focused removal) and reconstructive care (function-focused treatment in high-use areas).

A viral wart is a benign (non-cancerous) growth of the skin caused by infection with human papillomavirus (HPV). It often appears as a rough, thickened bump or plaque, but it can also be flat, smooth, or thread-like depending on location. Viral wart evaluation and treatment are used in both cosmetic care (appearance) and reconstructive care (comfort and function). In procedural settings, clinicians may manage viral wart using non-surgical, minimally invasive, or surgical methods depending on the case.

herpes zoster is a viral illness caused by reactivation of varicella-zoster virus (the virus that also causes chickenpox). It typically produces a painful, blistering rash in a band-like pattern on one side of the body or face. It is commonly encountered in general medicine, dermatology, ophthalmology, and perioperative care. It matters in both reconstructive and cosmetic settings because active outbreaks and nerve pain can affect timing, safety planning, and healing expectations.

herpes simplex is a viral infection caused by herpes simplex virus (HSV) that affects skin and mucous membranes. It commonly presents as recurrent clusters of small blisters or sores, often on the lips/face or in the genital area. The virus can remain inactive (latent) in nerve tissue and reactivate later, leading to future outbreaks. It matters in both cosmetic and reconstructive care because procedures on the face or genital region can intersect with outbreak risk and wound healing.

A carbuncle is a cluster of connected boils (skin abscesses) that form a larger, deeper skin infection. It typically involves hair follicles and surrounding tissue, most often caused by bacteria such as *Staphylococcus aureus*. It can occur anywhere on the body, commonly on the neck, back, shoulders, thighs, or buttocks. In cosmetic and reconstructive settings, it matters because it can affect skin quality, healing, and scarring.

A furuncle is a painful, pus-filled skin infection that starts in a hair follicle and forms a localized abscess (“boil”). It is most often caused by bacteria, commonly *Staphylococcus aureus*. It is used in both general medicine and surgical fields, including cosmetic and reconstructive practice, as a diagnosis that can affect skin quality and wound healing. It may resemble other lumps seen in aesthetic consultations, such as inflamed cysts or acne nodules.

folliculitis is inflammation of a hair follicle that can appear as small red bumps, pustules, or tender spots. This condition can be triggered by infection, irritation, or blockage around the follicle opening. It most often shows up in hair-bearing areas such as the face, scalp, chest, back, buttocks, and groin. The term is commonly used in both cosmetic and reconstructive settings because it can affect skin appearance, comfort, and procedure planning.

impetigo is a common, contagious, superficial bacterial skin infection. It most often affects the outermost layers of skin, especially on the face and extremities. In cosmetic and plastic surgery settings, it is discussed as a skin-condition risk that can delay elective procedures. It is relevant to both cosmetic and reconstructive care because intact, uninfected skin supports safer healing.

Cellulitis (skin infection) is a bacterial infection of the deeper layers of the skin and the soft tissue just beneath it. It usually causes spreading redness, warmth, swelling, and tenderness in a localized area. It can occur anywhere on the body, but it is common on the legs and can also affect the face and areas around surgical sites. In cosmetic and reconstructive care, it is discussed as a potential complication after procedures that disrupt the skin barrier.

nail dystrophy is a broad clinical term for an abnormal-looking or structurally changed fingernail or toenail. It can describe changes in nail thickness, shape, surface texture, attachment, or color. It is used in both cosmetic settings (appearance concerns) and reconstructive care (after injury or disease). It is a description, not a single diagnosis, and it can have many different causes.

paronychia is inflammation of the skin around a fingernail or toenail. It most often involves the proximal nail fold (near the cuticle) or the lateral nail folds (the sides). It can be acute (sudden) or chronic (longer-lasting), and may be infectious or irritant-driven. It is commonly discussed in both cosmetic settings (manicures, nail trauma) and reconstructive/hand care (periungual infections and wound management).

Onycholysis is the separation of the nail plate from the nail bed. It most often starts at the free edge of the nail and moves inward. It is a clinical finding (a sign), not a cosmetic procedure. It is discussed in both medical dermatology and cosmetic nail care because it changes nail appearance and can affect function.

brittle nails is an umbrella term for nails that split, peel, crack, or break more easily than expected. It describes a change in the nail plate (the hard keratin layer) that can affect appearance and daily function. It is commonly discussed in cosmetic care (hand aesthetics, manicures, nail camouflage) and in medical evaluation (to rule out skin or systemic contributors). It may involve fingernails, toenails, or both.

onychomycosis is a fungal infection of the nail unit (the nail plate, nail bed, and surrounding structures). It most often affects toenails, but fingernails can be involved. It can change nail color, thickness, surface texture, and shape, which can affect both appearance and function. It is discussed in general dermatology and podiatry, and it can matter in cosmetic and reconstructive planning when nails are visible or need to be healthy for procedures.

trichoscopy is a close-up examination of the hair and scalp using a magnified lighted device (a dermatoscope). It helps clinicians see hair shafts, follicle openings, and scalp skin details that are not visible to the naked eye. It is commonly used in medical dermatology and hair-loss clinics, including cosmetic hair restoration settings. It can support both cosmetic concerns (appearance and density) and reconstructive concerns (scarring and scalp disease).