Principles of Dermatological Diagnosis - Dermatology

Types of Skin Lesions
Primary Lesions: these lesions represent the
early stage of the lesion, how they look when
they start, prior to evolving
Secondary Lesions: these lesions represent a
later stage after the lesion has evolved or been
altered
This may help you to determine where in the
skin the process is occurring (epidermis, dermis,
fat)
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