Skin conditions resulting from physical factors

Pressure ulcers, also known as pressure sores, bedsores and decubitus ulcers, are localized injuries to the skin and/or underlying tissue that usually occur over a bony prominence as a result of pressure, or pressure in combination with shear and/or friction.

Acrocyanosis is persistent blue or cyanotic discoloration of the extremities, most commonly occurring in the hands, although it also occurs in the feet and distal parts of face.

A paper cut occurs when a piece of paper or other thin, sharp material slices a person's skin.

Scars are areas of fibrous tissue (fibrosis) that replace normal skin after injury.

Vibration white finger (VWF), also known as hand-arm vibration syndrome (HAVS) or dead finger, is a secondary form of Raynaud's syndrome, an industrial injury triggered by continuous use of vibrating hand-held machinery.

Traumatic asphyxia, or Perthe's syndrome, is a medical emergency caused by an intense compression of the thoracic cavity, causing venous back-flow from the right side of the heart into the veins of the neck and the brain.

Phytophotodermatitis, also known as "lime disease" (not to be confused with Lyme disease), "Berloque dermatitis", or "Margarita photodermatitis" is a chemical reaction which makes skin hypersensitive to ultraviolet light.

Miliaria (/ˌmɪl.iˈɛər.i.ə/; also called "sweat rash", "heat rash" or "prickly heat") is a skin disease marked by small and itchy rashes.

Frostbite or cold burn is the medical condition in which localized damage is caused to skin and other tissues due to freezing.

Photodermatosis is a skin disease that is caused by exposure to sunlight.

Freckles, sometimes called ephelides (singular ephelis), are clusters of concentrated melaninized cells which are most easily visible on people with a fair complexion.

A blister is a small pocket of lymph within the upper layers of the skin, typically caused by forceful rubbing (friction), burning, freezing, chemical exposure or infection.

Subcutaneous emphysema is when gas or air is in the layer under the skin.

Kangri cancer is a type of squamous-cell carcinoma of the skin.

Erythrocyanosis crurum is a skin condition, a variant of acrocyanosis caused by chronic exposure to cold.

Hydroa vacciniforme (HV) is a very rare, chronic photodermatitis-type skin condition with usual onset in childhood.

Immersion foot syndromes include trench foot, tropical immersion foot, and warm water immersion foot.

Silica granulomas are a skin condition which may be caused by automobile and other types of accidents which produces tattooing of dirt (silicon dioxide) into the skin that then induces the granuloma formation.

Zirconium granulomas are a skin condition characterized by a papular eruption involving the axillae, and are sometimes considered an allergic reaction to deodorant containing zirconium lactate.

Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure.

Erythema ab igne (EAI, also known as hot water bottle rash, fire stains, laptop thigh, granny's tartan and toasted skin syndrome) is a skin condition caused by long-term exposure to heat (infrared radiation).

Burn scar contracture refers to the tightening of the skin after a second or third degree burn.

Chronic actinic dermatitis (also known as "Actinic reticuloid," "Chronic photosensitivity dermatitis," "Persistent light reactivity," and "Photosensitive eczema") is a condition where a subject's skin becomes inflamed due to a reaction to sunlight or artificial light.

Chilblains (/ˈtʃɪlbleɪnz/) — also known as pernio and perniosis — is a medical condition that occurs when a predisposed individual is exposed to cold and humidity, causing tissue damage.

Cauliflower ear is a condition that occurs when the external portion of the ear is hit and develops a blood clot or other collection of fluid under the perichondrium.

Fissure of the nipple, also known as jogger's nipple, is a condition that can be caused by friction that can result in soreness, dryness or irritation to, or bleeding of, one or both nipples during or following running or other physical exercise.

Black heel and palm (also known as "Calcaneal petechiae," "Chromidrose plantaire," "Post-traumatic punctate intraepidermal hemorrhage," "Tache noir," and "Talon noir") is a skin condition characterized by a sudden shower of minute, black, punctate macules occurring most often on the posterior edge of the plantar surface of one or both heels.

Coral cuts are a severe type of skin injury that may occur from the cuts of coral skeletons.

Beryllium granulomas is a skin condition caused by granulomatous inflammation of the skin which may follow accident laceration, usually in the occupational setting.

Fracture blisters occur on skin overlying a fractured bone, and fractures complicated by the development of overlying blisters remain a clinical dilemma in orthopedics.

Equestrian perniosis is a skin condition that presents on the lateral thighs of women equestrians who ride on cold damp days.

Friction blisters are a skin condition that may occur at sites of combined pressure and friction, and may be enhanced by heat, moisture, or cotton socks.

Mercury granulomas is the result of mercury exposure, a skin condition characterized by foreign-body giant cell reaction.

Painful fat herniation (also known as "Painful piezogenic pedal papules" and "Piezogenic papules") is a rare cause of painful feet due to fat herniations through the thin fascial layers of the weight-bearing parts of the heel.

Narcotic dermopathy is a skin condition caused by the injection of drugs intravenously, resulting in thrombosed, cordlike, thickened veins at the site of injection.

Phototoxic tar dermatitis results from coal tar, creosote, crude coal tar, or pitch, in conjunction with sunlight exposure, which induces a sunburn reaction associated with severe burning sensation.

Pseudoverrucous papules and nodules are a skin condition characterized by striking 2- to 8-mm, shiny, smooth, red, moist, flat-topped, round skin lesions in the perianal area of children.

Photosensitivity with HIV infection is a skin condition resembling polymorphous light eruption, actinic prurigo, or chronic actinic dermatitis, seen in about 5% of HIV-infected people.

Silicone granulomas are a skin condition that occur as a reaction to liquid silicones, and are characterized by the formation of nodules.

Sclerosing lymphangitis is a skin condition characterized by a cordlike structure encircling the coronal sulcus of the penis, or running the length of the shaft, that has been attributed to trauma during vigorous sexual play.

Solar erythema is a skin condition characterized by redness of the skin following exposure to ultraviolet light, not to be confused with sunburn.

A corn (or clavus, plural clavi or clavuses) is a distinctively shaped callus of dead skin that usually occurs on thin or glabrous (hairless and smooth) skin surfaces, especially on the dorsal surface of toes or fingers.

Kangri ulcers are a cutaneous condition prevalent among the poorer classes of Kashmir, and a consequence of wearing warm embers.

Kang cancer is a cutaneous condition that may develop due to hydrocarbon-fueled heat exposure from sleeping on coal-fire-heated bricks.

Kairo cancer is a cutaneous condition that may develop due to hydrocarbon-fueled heat exposure from coal-fired clothing warmers.

Peat fire cancer is a cutaneous condition that may develop on the shins of women due to hydrocarbon-fueled heat exposure from coal-fired clothing warmers.

Uranium dermatosis is a cutaneous condition characterized by an irritant contact dermatitis and skin burns due to exposure to uranium.

Weathering nodules of ear is a cutaneous condition seen on the helices of the ears of Caucasian men who have a history of significant cumulative sun exposure.

A callus (or callosity) is a toughened area of skin which has become relatively thick and hard in response to repeated friction, pressure, or other irritation.

Polymorphous light eruption (PLE), or polymorphic light eruption (PMLE), is a skin condition triggered by sunlight.

Solar urticaria (SU) is a rare condition in which exposure to ultraviolet or UV radiation, or sometimes even visible light, induces a case of urticaria or hives that can appear in both covered and uncovered areas of the skin.

In medicine, a bleb is a blister (often hemispherical) filled with serous fluid.

Favre–Racouchot syndrome (also known as "Favre–Racouchot disease," and "Nodular cutaneous elastosis with cysts and comedones") is a disorder consisting of multiple open comedones that occurs in skin damaged by sunlight, especially under and lateral of the eyes.

Carbon stains are a skin condition characterized by a discoloration of the skin from embedded carbon, usually occurring in children from accidents with firearms or firecrackers, or from a puncture wound by a pencil, which may leave a permanent black mark of embedded graphite, easily mistaken for metastatic melanoma.

Trench foot is a medical condition caused by prolonged exposure of the feet to damp, unsanitary, and cold conditions.

Chafing refers to the irritation of skin caused by repetitive friction, usually generated through skin to skin contact of multiple body parts.