Alopecia (hair loss) – Types, Causes, Symptoms and Treatment

Definition of Alopecia Alopecia is the clinical term for hair loss. There are numerous forms and causes of alopecia, which may be localized or widespread, temporary or permanent. Though alopecia is emotionally traumatic for many people, it does not affect health in any way though may reflect underlying health conditions. Common forms of alopecia include the following: Androgenic […]

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Erysipelas Infection – Treatment

Definition of Erysipelas Infection Erysipelas is a streptococcal infection of the dermis, the middle layer of the skin. Infection commonly follows strep throat, with the bacteria likely carried on the hands to the skin where a scratch or other breach allows the bacteria to colonize into an infection. The infection presents characteristic symptoms that allow prompt clinical diagnosis. These symptoms include Redness […]

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Nevus – Congenital Nevus – Lesion on the Skin

Definition of Nevus Nevus is a discolored lesion on the skin. Nevi are very common and may take various shapes and colors. Most nevi contain primarily melanocytes and may differ in texture from the surrounding skin. A nevus may be smooth, distinguishable only by its color, or rough and segmented. Some nevi contain coarse hair. The most common form of […]

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Tinea infection – Ringworm – Capitis, Corporis

Definition of Tinea Tinea is a common fungal infection of the skin, involving the layers (including the hair and nails) that are cornified (composed of dead keratinocytes). Several species of fungi, known collectively as dermatophytes, cause tinea infection (also called dermatophytosis). People commonly refer to some forms of tinea as ringworm because the lesions have the appearance of […]

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Alopecia Areata – Definition, Causes and Symptoms

Definition of Alopecia Areata Alopecia Areata is a form of hair loss (alopecia) that results from an autoimmune disorder in which the immune system attacks clusters of hair follicles, halting hair growth. The clusters typically appear as circular patches of hairless skin, which are most noticeable when they occur on the scalp though can occur anywhere on the body. Hair growth […]

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Erythema Multiforme – Causes, Symptoms and Treatment

Definition of Erythema Multiforme Erythema Multiforme is a hypersensitivity reaction, commonly to medications and sometimes to viral infection, in which circular, weltlike lesions resembling targets form on the arms, hands, legs, and feet. Lesions also often form on and around the lips and inside the mouth. The center of the lesion is typically pale and blistered, surrounded with a […]

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Paronychia Infection – Acute / Chronic – Information

Definition of Paronychia Paronychia is inflammation and infection of the skin that surrounds the nails. It commonly occurs in people who bite their fingernails or the skin around them or who have frequent cuts around their fingernails. Paronychia is common in children who suck their thumbs or fingers Paronychia of a toenail may accompany an ingrown toenail. Splinters, insect bites and stings, and other […]

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Tinea Versicolor – Definition and Treatment

Definition of Tinea Versicolor Tinea Versicolor is a fungal infection of the skin that causes areas of altered pigmentation, usually darkened patches. Unlike other forms of tinea, tinea versicolor is not contagious. The fungus responsible, malassezia furfur, is normally present on the skin (normal flora). Dermatologists do not know why the fungus causes infection in some people and not in […]

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Birthmark – Types, Symptoms, Removal and Treatment

Definition of Birthmark Birthmark is a discoloration on a newborn’s skin present at, or that emerges within a few weeks of, birth. Birthmarks are either vascular (composed of blood vessels and red in color) or pigment (patches of skin that differ in color from the surrounding skin). Though some birthmarks, especially large ones, may be permanent, many fade to become faint […]

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Erythema Nodosum – Symptoms and Treatment

Definition of Erythema Nodosum Erythema Nodosum – The eruption of red nodules along the top surfaces of the lower legs (shins). Erythema nodosum is nearly always a symptom of an underlying condition, often a streptococcal infection, and represents inflammation of the fatty tissue at the foundation of the skin. Other symptoms include fever, pain and swelling in the joints, and generalized discomfort […]

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