Download ABC of Dermatology, 5th Edition (ABC Series) by Paul K. Buxton, Rachael Morris-Jones PDF

By Paul K. Buxton, Rachael Morris-Jones

Psoriasis -- administration of psoriasis -- Eczema (dermatitis) together with administration -- Urticaria and angio-oedema -- pores and skin and photosensitivity -- Inflammatory dermatoses : drug rashes -- Inflammatory dermatoses : immunobullous and different blistering problems -- Inflammatory dermatoses : connective tissue affliction, vasculitis and similar issues -- dermis and systemic affliction -- Leg ulcers -- zits and rosacea -- Bacterial infections -- Viral infections -- HIV and the surface -- Fungal infections -- Insect bites and infestations -- Tropical dermatology -- Hair and scalp / Samantha Bunting, David Fenton -- ailments of the nails / David de Berker -- Benign epidermis tumours -- Premalignant and malignant pores and skin tumours -- useful methods / Raj Mallipeddi -- Lasers, severe pulsed mild, and photodynamic treatment / Alun V. Evans -- Dressings and bandages / Judy Davids -- Formulary / Karen Watson

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1/22/2009 1:43:35 PM 30 ABC of Dermatology Allergic contact dermatitis The characteristics of allergic dermatitis are: • previous exposure to the substance concerned • 48–96 hours between contact and the development of changes in the skin • activation of previously sensitized sites by contact with allergen at a distant skin site • persistence of the allergy for many years. in regional lymph nodes to become sensitized to the antigen. On subsequent exposure to the antigen an allergic reaction occurs, due to accumulation of sensitized T lymphocytes at the site of the antigen with a resultant inflammatory response.

Very low potency steroids such as hydrocortisone may be purchased over the counter and used to treat mild eczema. For moderate to severe disease the current approach is to prescribe potent topical steroids (mometasone, betamethasone, fluocinolone acetonide) for short periods followed by steroid ‘holidays’ rather than using daily low-potency steroids, which rarely clear the eczema. For acute dermatitis start with a potent topical steroid for a few days or weeks and then reduce to a lower potency once the disease is controlled.

25 Chronic actinic dermatitis. 25). Occupational dermatitis In the workplace employees may have contact with allergens or irritants that can result in dermatitis. If an individual has an atopic tendency to develop eczema they are at increased risk of developing an occupational dermatitis. Secondary bacterial infection can play a role once dermatitis has occurred. Therefore contact dermatitis, atopic eczema and infection may all be superimposed. For example, a student nurse or trainee hairdresser is exposed to water, detergents and other factors that will exacerbate any preexisting eczema.

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