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*'''Acantholysis''' - loss of cohesion between cells of living epidermis, especially stratum spinosum
*'''Acantholysis''' - loss of cohesion between cells of living epidermis, especially stratum spinosum
*'''Acanthosis''' - hyperplasia of stratum spinosum
*'''Acanthosis''' - hyperplasia of stratum spinosum
*'''Erosion''' - superficial ulcer involvng only epidermis, heals without scarring
*'''Erosion''' - superficial ulcer involvng only epidermis, heals without scarring
*'''Erythema''' - reddening of skin caused by congestion of capillaries
*'''Erythema''' - reddening of skin caused by congestion of capillaries
*'''Excoriation''' - erosions and ulcers caused by self-trauma
*'''Furunculosis''' - rupture of hair follicles with severe inflammation
*'''Furunculosis''' - rupture of hair follicles with severe inflammation
*'''Hyperkeratosis''' - increased thickness of stratum spinosum
*'''Hyperkeratosis''' - increased thickness of stratum corneum
*'''Lichenification''' - thickeningof skin superficial layers with exaggerated crevices
*'''Lichenification''' - thickeningof skin superficial layers with exaggerated crevices
*'''Macule''' - circumscribed change in skin colour < 1cm in diameter
*'''Macule''' - circumscribed change in skin colour < 1cm in diameter
*'''Nodule''' - solid elevation of skin, >1cm in diameter
*'''Papule''' - solid elevation of skin, <1cm in diameter
*'''Papule''' - solid elevation of skin, <1cm in diameter
*'''Parakeratosis''' - abnormal cornification, keratinocytes retain their nuclei
*'''Parakeratosis''' - abnormal cornification, keratinocytes retain their nuclei
*'''Urticaria''' - vascular reaction in dermis, consists of transient wheals
*'''Urticaria''' - vascular reaction in dermis, consists of transient wheals
*'''Vesicle''' - blister <1cm in diameter
*'''Vesicle''' - blister <1cm in diameter
*'''Vitiligo''' - Depigmentation in focal areas where melanocytes are absent
[[Category:Integumentary System - Pathology]]