Category: Diagnostic Reference Sheets
General Information Lichen Planus (LP) is a common skin condition that causes pruritic reddish-purple, shiny flat-topped bumps. The sizes of the papules may vary from small pin point to larger then a centimeter. White lines may develop on the bumps called Wickham’s striae. LP may affect any area of the body, but is frequently noted […]
General Information Lichen Amyloidosis has been found to be linked endocrine neoplasia type 2A (MEN 2A) also known as Sipple syndrome. Lichen amyloidosis is usually localized to the interscapular region consisting of lichenoid papules with hyperpigmentation and fine scaling. It is found in the papillary dermis, usually at the tip of the dermal papillae. The […]
General Information Lentigo Maligna, also known Hutchinson’s Freckle is a type of malignant melanoma (skin cancer). Typically occurring on sun damaged skin in middle-aged and elderly patients, usually appearing on the face. Lentigo maligna (accounting for about 10% of cases diagnosed) is one of the four main subtypes of invasive melanoma, which include superficial spreading […]
General Information Lentigo Simplex is the most common form of lentigo. Usually present by birth, but may develop in early childhood as a single lesion or multiple lesions. Lentigo simplex does not occur after sun exposure and it does not have any predisposition of a medical disease or condition. It is also referred to as […]
General Information Keratosis Pilaris (KP) is a genetic disorder of keratinization of hair follicles of the skin. An extremely common condition that manifests as small, rough folliculocentric keratotic papules, often described as chicken bumps, chicken skin, or goose bumps. It is a result from buildup of protein (keratin) in the openings of the hair follicles […]
General Information Keratoacanthoma (KA) is a rapidly growing skin cancer appearing as a volcano-like bump on sun-exposed skin of middle-aged and elderly individuals. It is considered, by many scientists, that keratoacanthoma is a less serious form of squamous cell carcinoma. Most keratoacanthoma cause only minimal skin destruction, but a few behave more aggressively and can […]
General Information Keloids are smooth, shiny, flesh-colored, raised growths of fibrous tissue that form over areas of injury or surgical wounds. Keloids may form in any scar; even scarring that can be results from severe acne. Keloids are asymptomatic, may present tenderness, painful, be pruritic they may also cause a burning sensation. In addition to […]
General Information Kaposi’s Sarcoma (KS) is a disease in which cancer cells are found in the tissues under the skin or mucous membranes that line the mouth, nose, and anus. The disease causes red or purple patches (lesions) on the skin and/or mucous membranes that spread to other organs in the body, such as the […]
General Information Intertrigo refers to an inflammation of the body folds, which is usually located in the inner thighs, armpits, and underside of the breasts or belly. It is red and raw looking and may itch, ooze or be a little sore. Intertrigo is common, especially in hot humid climates. The condition is a frequent […]
General Information Stings and bites from insects are common often resulting in redness, swelling, pain and itching in the injured area. Sometimes a sting can cause a life-threatening allergic reaction that requires emergency care. Bites or stings can cause varying degrees of severity in different people including babies and children. Signs or symptoms may include […]