Search results
Results from the WOW.Com Content Network
Although AD was previously considered primarily a childhood disease, it is now recognized as highly prevalent in adults, with an estimated adult prevalence of 3–5% globally. [ 121 ] [ 122 ] It now affects 15–30% of children and 2–10% of adults in developed countries, and in the United States has nearly tripled in the past 30–40 years.
The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
The skin weighs an average of 4 kg (8.8 lb), covers an area of about 2 m 2 (22 sq ft), and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are glabrous skin , the nonhairy skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin ...
The area of infection is usually painful. [1] Lymphatic vessels may occasionally be involved, [1] [4] and the person may have a fever and feel tired. [2] The legs and face are the most common sites involved, although cellulitis can occur on any part of the body. [1] The leg is typically affected following a break in the skin. [1]
The area of skin involved can vary from small to covering the entire body. [1] [2] Dermatitis is also called eczema but the same term is often used for the most common type of skin inflammation, atopic dermatitis. [7] The exact cause of the condition is often unclear. [2] Cases may involve a combination of allergy and poor venous return. [1]
After an inflamed nodular acne lesion resolves, it is common for the skin to darken in that area, which is known as postinflammatory hyperpigmentation (PIH). The inflammation stimulates specialized pigment-producing skin cells (known as melanocytes ) to produce more melanin pigment, which leads to the skin's darkened appearance. [ 36 ]
The condition is common in infants within the first three months of age or in adults aged 30 to 70 years. [2] [4] [5] It tends to affect more males. [12] Seborrhoeic dermatitis is more common in African Americans, among individuals who are immune compromised, such as with HIV, and individuals with Parkinson's disease. [11] [12]
Psoriasis vulgaris (also known as chronic stationary psoriasis or plaque-like psoriasis) is the most common form and affects 85–90% of people with psoriasis. [12] Plaque psoriasis typically appears as raised areas of inflamed skin covered with silvery-white, scaly skin. These areas are called plaques and are most commonly found on the elbows ...