It can sometimes affect the genitals, hands, or feet. It often presents as deep swelling around the mouth and eye areas. Angioedema can also affect the mucous membranes, such as the eyelids and lips. Urticaria occurs on the outer layer of the skin. Urticaria only affects the skin, though, and each mark lasts less than 24 hours. Urticaria and angioedema are very similar. Umbilication: A dip inside a skin lesion that looks similar to a navel.Ulcer: A wound deeper than the top layer of skin that damages the second layer of skin.Scale: A build-up of cells that form patches and then flake off the skin.It can occur due to leaking wounds that have been improperly cared for. This happens when skin is in contact with water or fluid for too long. Maceration: Skin that is wet, wrinkly, and lighter in color.Lichenification: A rough thickening of the top layer of skin.They can be painful and can be caused by excessive dryness. Fissure: Straight breaks in the skin that go deeper than the top layer of skin into the second layer of skin.Excoriation: Straight scratches that result in the loss of the top layer of skin.It is moist and glistening in appearance. Erosion: The loss of the top layer of skin.Crust: A rough, elevated area formed from dried fluid.It is usually due to the use of a topical medicine like steroids. Atrophy: Skin that is paper-thin, transparent, and wrinkled.Wheal: An irregular-shaped, solid, elevated area that can vary in color and lasts for only a short time.Įxamples of secondary skin lesions include:.Tumor: A lesion that is larger than 0.5 centimeter (0.2 inch) in size but looks similar to a nodule.Telangiectasia: Clusters of 'spider veins' where tiny blood vessels cause red lines on the skin.Nodule: A circular, elevated, solid bump greater than 0.5 centimeter (0.2 inch) in size.Pustule: Similar to a vesicle but filled with pus instead of fluid.Vesicle: A fluid-filled blister less than 0.5 centimeter (0.2 inch) in size.Plaque: A lesion that is raised like a papule and is greater than 1-2 centimeter (0.4 to 0.8 inch) in size.Patch: A flat lesion that is different in color and greater than 0.5 centimeter (0.2 inch) in size.Papule or maculopapular: An elevated solid lesion, up to 0.5 centimeter (0.2 inch) in size.Macule: A flat lesion that is different in color, and less than 0.5 centimeter (0.2 inch) in size.Cyst: A raised area of the skin that has clear borders and is filled with fluid or semi-solid fluid.Bulla: A vesicle that is more than 0.5 centimeters (0.2 inch) and is filled with fluid.Flat lesions: Examples include patches and macules.Lesions that are solid masses: Examples include nodules and tumors.

Lesions formed by fluid within the skin layers: Examples include vesicles and pustules.Primary skin lesions tend to be divided into three groups: This can happen when a primary skin lesion is:įor example, if eczema is scratched, a crust may form. Secondary skin lesions arise from primary skin lesions. Skin lesions are either primary or secondary. Primary skin lesions are either present from birth or develop during your lifetime.

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