Skin Bulla – Blister – Definition and Treatment

Definition of Bulla Bulla is a large (5 millimeters or greater) blisterlike formation, raised and fluid filled, that may hurt or itch. INFECTION, contact irritants, IMMUNE RESPONSE, and systemic health conditions may cause bullae. Bullous DERMATITIS may result from contact with plants such as poison ivy, oak, or sumac. To determine the cause of bullous eruptions, […]

Read More

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 […]

Read More

Keratosis Pilaris – Definition and Treatment

Definition of Keratosis Pilaris Keratosis Pilaris is a very common condition in which the keratocytes produce excessive keratin, clogging the HAIR follicles and forming small bumps on the SKIN that resemble GOOSE BUMPS. The bumps may be the same color as the skin or slightly reddened and create a texture like rough sandpaper on the skin’s surface. Occasionally the bumps itch. […]

Read More

Pilonidal Disease – Cysts, Abscess and Treatment

Definition of Pilonidal Disease Pilonidal Disease is a chronic condition in which HAIR-filled cysts form at the base of the spine. The cysts typically originate when the SKIN closes to form saclike structures with hair trapped inside. The sac fills with fluid, cells, and other debris. Often there are indentations or pits over the tops of the cysts, and […]

Read More

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 […]

Read More

Bullous Pemphigoid – Definition and Treatment

Definition of Bullous Pemphigoid Bullous Pemphigoid is an autoimmune disorder in which itchy bullae (blisterlike formations) develop on the SKIN. Bullous pemphigoid is more common in people age 50 and older, and typically occurs in those who are 70 or older. The bullae tend to concentrate in areas where there are skin folds, such as the groin and […]

Read More

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 […]

Read More

Lentigines – Dark Spots – Treatment

Definition of Lentigines Dark spots of varying size on the SKIN, also called freckles, liver spots, or age spots. Lentigines develop as a result of continued sun exposure and indicate damage to the skin. A single spot is a lentigo. Lentigines are often widespread on areas of skin that receive high sun exposure, such as the face and […]

Read More

Pityriasis Rosea Rash – Symptoms and Treatment

Definition of Pityriasis Rosea Pityriasis Rosea is a common SKIN RASH in which an outbreak of lesions occurs and resolves over a period of 3 to 12 weeks, generally without treatment or complications. The lesions are characteristically oval with distinct borders and may be smooth (macules), raised (papules), or scaly (plaques). Often the lesions itch and sometimes they […]

Read More

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 […]

Read More