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What is Which of the following is secondary lesion? and explain in detail?
Skin Lesion Primary Special Depending on size <0.5cm >0.5cm Comedones-Acne <1cm >1cm Wheals- Uicaria(are transient hives). Flat Macule Patch Burrows-scabies Solid raised Papule Plaque - if horizontal diameter more Nodule - if veical diameter more Fluid filled Vesicle Bullae Pus filled Pustule Abscess D/t extravasation of blood Petechiae Purpura Ecchymosis i.e. >1cm Secondary lesions are lesions which develop over primary lesions. Eg. Scales. A flat plate or flake of stratum corneum. Types collarette - fine, peripherally attached and centrally detached scale at the edge of an inflammatory lesion Furfuraceous or pityriasiform - fine and loose. Ichthyotic - large and polygonal.