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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.
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©2013 UpToDate ® Print Email Classification of burns by depth of injury Depth Appearance Sensation Healing time Superficial Dry, red Blanches with pressure Painful 3 to 6 days Superficial partial-thickness Blisters Moist, red, weeping Blanches with pressure Painful to temperature and air 7 to 21 days Deep partial-thickness Blisters (easily unroofed) Wet or waxy dry Variable color (patchy to cheesy white to red) Does not blanch with pressure Perceptive of pressure only >21 days, usually requires surgical treatment Full-thickness Waxy white to leathery gray to charred and black Dry and inelastic No blanching with pressure Deep pressure only Rare, unless surgically treated Fourth degree Extends into fascia and/or muscle Deep pressure Never, unless surgically treated Adapted from: Mertens DM, Jenkins ME, Warden GD, Med Clin North Am 1997; 32:343; and Peate, WF, Am Fam Physician 1992; 45:1321; and Clayton MC, Solem LD, Postgrad Med 1995; 97:151.