Poison ivy
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Revision as of 18:11, 25 February 2021 by Aidan (talk | contribs) (Created page with "== Background == * Plant that is a major cause of contact dermatitis in endemic areas === Pathophysiology === * Exposure in sensitized people causes a Type IVa hypersen...")
Background
- Plant that is a major cause of contact dermatitis in endemic areas
Pathophysiology
- Exposure in sensitized people causes a Type IVa hypersensitivity reaction to Rhus antigen
- Th1 type T cells that activate macrophages by secreting large amounts of cytokines such as interferon- and tumor necrosis factor-alpha
