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Defatting is the chemical dissolving of dermal lipids, from the skin, on contact with defatting agents. This can result in water loss from the affected area and cause the whitening and drying of the skin which may result in cracking, secondary infection and chemical irritant contact dermatitis. [1]
Effects depend on the substance; hydrogen peroxide removes a bleached layer of skin, while nitric acid causes a characteristic color change to yellow in the skin, and silver nitrate produces noticeable black stains. Chemical burns may occur through direct contact on body surfaces, including skin and eyes, via inhalation, and/or by ingestion.
This causes the fungal infection that results in skin changes, including flaking or dandruff, patchy or flaky white or yellow scales on top of greasy skin, a painful rash, or itchiness.
The dye itself can be directly absorbed through the skin and into the bloodstream. [14] The stratum corneum (the outermost layer of skin also called the “horny layer”) contains a “lipid domain” that allows the dye to pool and provide opportunity to diffuse into the body. [14] Some hair dyes can also irritate the skin with prolonged ...
Precipitated sulfur and colloidal sulfur are used, in form of lotions, creams, powders, soaps, and bath additives, for the treatment of acne vulgaris, acne rosacea, and seborrhoeic dermatitis. [1] [2] [3] Other topical uses included the treatment of superficial mycoses (infections with fungi) and scabies, but this is largely obsolete now.
Once fully developed, the effected skin will present with a leathery, "bark-like" texture and remain itchy and inflamed. [ 3 ] Common areas of occurrence are noted in points of the body that are easily accessible or prone to itchiness, notably the nape of the neck, wrists, hands, forearms, waist, scrotum, vulva, thighs, lower legs and feet.
Itch; A man scratching his back: Specialty: Dermatology: Symptoms: Compulsion to scratch an irritated area of skin: Causes: Certain infections, allergies, blood derangements and environmental factors: Risk factors: Dry skin: Diagnostic method: Often based on the causes of itching: Differential diagnosis: Pain: Treatment: Antipruritics, phototherapy
In traditional skin treatment, elemental sulfur was used (mainly in creams) to alleviate such conditions as scabies, ringworm, psoriasis, eczema, and acne. The mechanism of action is unknown—though elemental sulfur does oxidize slowly to sulfurous acid, which is (through the action of sulfite ) a mild reducing and antibacterial agent.