skin curriculum

A localized collection of pus. 3

An adjective describing a ring-like or circular shape. In dermatology, annular lesions are figurate lesions characterized by a ring-like morphology. 2,3

An adjective to describe an arched or bow-shape. 3

The thinning of the epidermis, dermis or subcutaneous fat. 1

A serous, fluid-filled space in the epidermis, more than 1 cm in diameter (i.e., a large blister). 1

A rare autoimmune disease that can cause large fluid-filled, tense bullae/blisters on the skin. 1

(or Agminated); A term used to describe the arrangement of multiple lesions, which are grouped together. 1,2

A term used to describe the arrangement of  multiple lesions, which come together, merge or overlap to form one unit . 1,2

A scab, formed by dried serum, blood or pus on the surface of the skin. 1,3

A thin-walled closed capsule or sac-like structure, filled with fluid, solid or semisolid material. 3

A  a hand-held visual aid device with a power source, light and magnification lens (also called dermoscope), that is used for examining the skin, nails, and hair. 3

An adjective to describe being round like a disk, often for lesions that are circular or oval and typically well-defined. 3

A term used to describe the configuration of lesions, which are separate and distinct (not joined to one another). 3

A bruise; A non-blanching skin discolouration due to bleeding under the skin. 1,3

 The name for a group of disorders that involve problems with the body's connective tissues. Most common presentation includes stretchy, thin skin, hypermobile joints and easy bruising. 2

 A loss of part or all of the epidermis (superficial or partial destruction of the skin), that does not scar on healing. 1,3

Blanchable redness of the skin or mucous membranes, caused by hyperemia (increased blood flow) in superficial capillaries. 2

A condition that causes spots on the skin, which have a dark center surrounded by pink, red, or purple rings, like a target or bull's-eye. 2

A condition that causes painful red, red-brown, or purple bumps on the legs. 2

Areas of trauma to the skin (loss of epidermis and a portion of the dermis) that result from rubbing or scratching. 1,3

(or Polycyclic); A term used to describe the configuration of lesions which presents as many circles (coalescing circles, rings or incomplete rings). 3

A filament-associated protein that binds to keratin fibers in epithelial cells, it brings together structural proteins in the outermost skin cells to form tight bundles, flattening and strengthening the cells to create a strong barrier. It plays an important role in the skin's barrier function. 4

A linear crack in the skin that extends into the dermis. 1

 A term used to describe the distribution of a lesion that is localized to a specific area or tissue. 3

 Visible (slightly enlarged, raised) sebaceous (oil) glands that appear in hairless areas of your skin (e.g., lips, genitals, or the inside of the cheeks). 3

(or Boil); Tender nodules or pustules that involve a hair follicle and are caused by infection. 2

A term used to describe the distribution of a lesion that is spread over most of the body surface area (generalized/widespread/disseminated). 3

A scar that is raised and has tissue that extends beyond the edges of the original wound. 2

Thickening of the epidermis with exaggeration of normal skin lines usually due to chronic rubbing or scratching of an area. 1

A flat spot/colour change in the skin <1cm in diameter. 1,3

Having relatively small protrusions from the exterior, "nipple-like".

An elevated, solid, palpable lesion > 1 cm in diameter, usually located primarily in the dermis or subcutis. Usually has a rounded surface and is caused by an accumulation of cells or change in connective tissue in the deep dermis or subcutis. 1,3

An adjective to describe coin-shaped lesions. 3

A larger, flat colour change in the skin, > 1 cm in diameter. 1,2

An elevated, solid, palpable lesion <1cm in diameter. Occurs due to an increase in the number of cells or a change in the connective tissue in epidermis or dermis. 1,3

 A rare autoimmune disease that is characterized by painful blisters and erosions on the skin and mucous membranes, specifically flaccid bullae that quickly evolve to erosions. 2,3

Non-blanchable spots of small collections of blood in the skin (pinpoint form of purpura), <0.5cm in diameter. 2,3

A circumscribed, raised, palpable lesion >1cm in diameter. Occurs due to a change in the number of cells or connective tissue in epidermis or superficial dermis. 2,3

An adjective pertaining to pruritus, itch.,3

A small, circumscribed epidermal lesion that contains pus (skin papules containing purulent material). 2

Are non-blancheable, red-purple lesions caused by bleeding from cutaneous vessels into the skin. Purpura may be palpable or non-palpable, and range in size from 1 mm (petechiae) up to several cm across (ecchymoses). 2,3

An adjective used to describe lesions with a net-like arrangement/ pattern. 3

Flakes on the skin surface formed by desiccated, thin plates of cornified epidermal cells (dead skin). 2

Fibrous tissue that replaces normal dermal or subcutaneous tissue after skin injury. 2

An adjective to describe the shape of lesion that is wavy, resembling a snake or serpent. 3

A disorder in which the skin appears yellow and thickened as a result of abnormal elastic tissue accumulation, due to chronic sun damage on aging skin. 3

An adjective to describe a lesion that has a target-like pattern of concentric ring.3

A solid, firm lesion that can be exophytic, endophytic, or level with the skin surface, usually >5cm in diameter. 2

A complete loss of the epidermis in addition to part of the dermis (and may extend to subcutaneous tissue). An ulcer heals with a scar. 1,3

A descriptive term used for a lesion that is depressed in the center; a central dell, usually seen in a vesicle, papule or nodule.3

(or Hives); A raised, pruritic rash, characterized by transient weals.3

A circumscribed, serous-filled papule (small blister), <1cm in diameter. 1,2,3

An edematous papule or plaque, typically transient, circumscribed, and elevated, often with erythematous borders and pale centers.1