The technology employs machine-learning software to analyze images of skin lesions and provide doctors with objective data on telltale biomarkers of melanoma, which is deadly if detected too late, but highly treatable if caught early.
The AI system — trained using tens of thousands of skin images and their corresponding eumelanin and hemoglobin levels — could initially reduce the number of unnecessary biopsies, a significant health-care cost. It gives doctors objective information on lesion characteristics to help them rule out melanoma before taking more invasive action.
The technology could be available to doctors as early as next year.
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Efficacy of a Topical Lotion Containing Lactoferricin, Glycerophosphoinositol Lysine and Verbascoside for External Otitis Due to Atopic Dermatitis
The prevalence of atopic dermatitis (AD) in the general dog population is 3-15% it represents the diagnosis for up to 58% of dogs affected with skin disease. Canine AD has been defined by Halliwell in 2006, as a “genetically predisposed inflammatory and pruritic allergic skin disease with characteristic clinical features, associated with IgE antibodies most commonly directed against environmental allergens”. Indeed, genetic factors and familiar predisposition to the disease have been found to play a major role in its pathogenesis, although the full pathogenesis is still unknown. It is certain that the immunological aberration is usually associated with skin barrier dysfunctions; pro-inflammatory cytokines, neuronal itch stimuli and the animal’s pruritic behaviours establish a vicious cycle of itch that perpetuates and potentially exacerbates the skin lesions and defects in the skin barrier function. The initial clinical feature of canine AD is pruritus, which at the beginning may be associated with no lesion or with primary skin lesions such as erythema and occasionally papules. The mediators that elicit the sensation of pruritus have not been elucidated, but histamine does not appear to be a mediator in dogs in contrast to humans and mice. It is usually a life-long pathology which can be controlled, but it can be seldom cured. The diagnosis of canine AD does not require any analytical test, such as IgE determination and/or intradermal skin test, and it can be done on the basis of pruritus associated with skin lesions. The skin lesions are usually associated with the detachment of corneocytes from live skin. Furthermore, the skin lesions are usually associated with the cytological presence and overgrowth of bacteria (mainly Staphylococcus) and fungal or yeast (mainly Malassezia Pachydermatis) in the damaged region, and it has been purpose that this overgrowth could be also responsible for most of the symptoms. Due to the skin infection, canine AD often develops otitis externa and usually, the signs of atopic otitis were noticed by the owners before the other signs of AD.
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Irritant contact dermatitis accounts for 80% of all contact dermatitis reactions. It occurs when the skin comes in contact with a substance that acts as an irritant. Even though over 2800 substances have been identified as irritants, almost any substance under the right circumstances can act as an irritant.
Skin Barrier in Irritant Contact Dermatitis
The epidermis acts as a barrier with an outer layer composed of dead cells in a water-protein-lipid matrix.
Acute Irritant Contact Dermatitis
Acute irritant contact dermatitis occurs when the skin comes in contact with a strong toxic chemical such as an acid or alkali. The rash occurs within minutes to hours after exposure and in most cases, healing occurs soon after exposure. This rash usually has sharp borders and consists of redness, vesicles, bullae, or skin sloughing.
- Picture of irritant contact dermatitis on the foot
Chronic Cumulative Irritant Contact Dermatitis
Chronic cumulative irritant contact dermatitis is the more common of the two. This dermatitis occurs after repeated exposure to low-level irritants, such as soaps or shampoos. The rash may take weeks, months, or even years to develop.
The rash usually has poorly-defined borders, is very itchy, and consists of redness, scaling, fissuring, and lichenification.
- Picture of irritant contact dermatitis on the hand
Treatment of Irritant Contact Dermatitis
The mainstay of treatment for irritant contact dermatitis is avoiding as many of the irritants as possible.
Other helpful measures include:
- Reduce water exposure – because frequent water exposure actually dries out the skin and disrupts the barrier function of the epidermis, keep water contact to a minimum.
- Moisturize – Frequent moisturization improves the barrier function of the skin. Avoid the use of moisturizers with perfumes since these may also act as an irritant.
- Protection – Because the hands are often affected by irritant contact dermatitis, the use of gloves may help reduce exposure to the irritant.
- Topical steroids – Medium- to high-strength topical steroids may be needed to reduce inflammation and itching.
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