By Dan Lipsker
Conceived as a advisor for practitioners of their paintings in dermatology, this ebook is exclusive in its strategy. From cutaneous indicators to the richness of differential analysis, it courses practitioners via each step, from semiological research to prognosis. the purpose is to supply readers with the necessities of suitable dermatological reasoning. the 1st a part of the ebook makes a speciality of actual exam and on spotting uncomplicated lesions, the practitioner’s development blocks. The illnesses requiring realizing are then defined within the kind of a richly illustrated atlas, during which every one diagram has been selected as an exemplary academic software. within the ultimate half, differential prognosis is proposed within the kind of quite a few tables summarizing different cutaneous symptoms, delivering readers with an entire toolkit to help with analysis. This e-book will provide trainee dermatologists, common physicians and internists the data they should establish simple lesions and a whole and distinctive review of some of the ailments they're more likely to come across. while, skilled dermatologists will locate this e-book a helpful reference paintings for differential diagnosis.
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Deep involvement produces infiltrated plaques or nodules. The bruise-like color evolution characterizes erythema nodosum. Lesions can be the result of: • Cell infiltration (inflammatory or tumoral) or sclerosis of the inter-adipose septa. Inflammation of the inter-adipose septa characterizes erythema nodosum. • Infiltration (inflammatory or tumoral) of adipose lobules, consisting in panniculitis. • Thrombosis or inflammation of hypodermal vessels, producing linear, layered lesions, sometimes associated with livedo when blood vessels lined with muscle tissue are affected.
1a, b). 2 Skin Hyperextensibility Skin that can abnormally be extended, but maintains normal elasticity by returning to its initial position after extension, is called hyperextensible (Fig. 2a). Skin hyperextensibility reflects an abnormality of the dermal collagen. It is often associated with joint hypermobility (Fig. 2b). 3 b Loss of Elasticity Alteration or loss of elastic tissue results in loss of skin elasticity. The skin subsequently becomes loose and does not recover its initial aspect after pinching; imprinted marks persist.
3 Pustule When fluid contained in the lesion is primarily cloudy or purulent, it is a pustule (Fig. 11). Pustules are less than 5 mm in diameter; a purulent lesion measuring more than 5 mm is called a purulent bulla (Fig. 12). , folliculitis, Fig. 13) are distinguished from non-follicular lesions, which are generally more planar, not acuminate, and whitish (Fig. 14). The second type of pustule is generally located in the epidermis under the stratum Fig. 8 Erosion, erythema, bullae. Pemphigus. Those affected by pemphigus have a marked mucocutaneous fragility, which explains the numerous erosions following rupture of the bullae and positive Nikolsky’s sign (refer to Fig.
Clinical Examination and Differential Diagnosis of Skin Lesions by Dan Lipsker