Sean Klepper M.D.
Stephen Lyle, M.D., ...
- Large, annular scaly plaques, most commonly on the trunk of adults
- May be idiopathic or secondary to a variety of conditions such as infections, autoimmune diseases, drugs or neoplasia.
- Superficial variant (more common):
- Spongiosis with exocytosis and parakeratosis and papillary dermal edema
- Sharply demarcated superficial perivascular lymphocytic inflammation ("coat sleeve" or "cuffing")
- Superficial and deep variant:
- Normal epidermis
- Lymphocytes "cuff" both superficial and deep blood vessels