Actinic Keratosis – Definition, Symptoms and Treatment

Definition of Actinic Keratosis Actinic Keratosis – Precancerous growths (lesions) on the SKIN, also called solar keratosis, that develop as a consequence of damage from overexposure to the sun. Actinic keratosis becomes more common with advancing age. Lesions are most common on the face, scalp, chest, hands, and arms though can develop anywhere on the body that […]

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Decubitus Ulcer – Staging, Symptoms and Treatment

Definition of Decubitus Ulcer Decubitus Ulcer – An erosion in the SKIN that results from the pressure of remaining in one position for an extended period of time, commonly called a bedsore or pressure sore. The extended pressure deprives the tissue of blood circulation, allowing cells to die and the tissue to break down. Tissues over areas where […]

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Hyperhidrosis – Treatment, Symptoms and Causes

Definition of Hyperhidrosis Hyperhidrosis is Excessive sweating that results from abnormal functioning of the nerves or BLOOD vessels that supply the eccrine SWEAT GLANDS. Hyperhidrosis characteristically involves the hands (palms), feet (soles), and axillae (underarms), though can affect eccrine sweat glands anywhere in the body. The eccrine sweat glands produce most of the body’s sweat and play […]

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Papilloma definition

Definition of Papilloma Papilloma – A general classification of tumors arising from the epidermis (outer layer of the SKIN) as well as the epithelial layer of the mucous membranes. Warts, HUMAN PAPILLOMAVIRUS (HPV) lesions (also called condylomata or genital warts), and polyps are papillomas. Though papillomas are noncancerous (benign), some types of papillomas, notably intestinal polyps, are the foundation […]

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Rash Definition and Associated Conditions

Definition of Rash Rash is a general term for a broad range of SKIN eruptions. It is a symptom rather than itself a health condition and may accompany numerous dermatologic or systemic conditions. Viral and bacterial infections, immune and autoimmune responses, toxic contacts, systemic illnesses, chronic health conditions, and parasitic infestations often cause rashes. Many rashes are […]

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Xanthoma Definition and Treatment

Definition of Xanthoma Xanthoma is a fatty deposit that forms a benign (noncancerous) LESION beneath the SKIN, though also may occur in other tissues. Xanthomas develop in people who have chronic, untreated HYPERLIPIDEMIA (elevated BLOOD cholesterol and triglycerides levels). In their most common form, xanthomas appear as yellowish blebs beneath the skin, typically rounded or oblong, that protrude as nodules or […]

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Albinism – Types, Symptoms, Causes and Treatment

Definition of Albinism and Pigmentation Albinism is a genetic disorder in which the melanocytes do not produce, or produce reduced amounts of, melanin, the chemical that deposits pigment in cells of the SKIN, HAIR, and structures of the EYE. Without melanin, the skin, eyes, and hair have little or no pigment and consequently lack color. People who have albinism […]

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Dermatitis – Symptoms, Treatment, Types

Definition of Dermatitis Dermatitis is INFLAMMATION, redness (erythema), and itching of the SKIN. It has many causes and manifests in numerous and varied presentations, some of which may reflect conditions such as viral INFECTION, AUTOIMMUNE DISORDERS, and certain kinds of CANCER. Dermatitis may be acute (come on suddenly) or chronic (persist or recur over an extended period of time). Atopic Dermatitis […]

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Ichthyosis – Diagnosis and Treatment

Definition of Ichthyosis Ichthyosis is a genetic disorder of keratinization in which the cells the SKIN sheds as part of its continual renewal cluster on the skin’s surface in scalelike formations. The lesions itch and flake, and the involved surfaces of the skin become very dry, reddened, and inflamed. Ichthyosis may affect limited areas of the skin or most […]

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Papule on Skin – Definition

Definition of Papule Papule is a small, raised bump arising from the epidermis that is distinctive and firm to the touch. Papules may be discolored or the same color as the surrounding SKIN. The presence of papules is a symptom of many dermatologic and other health conditions. Papules that cluster together form a skin plaque, usually taking on […]

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