“…Others hypothesize that viral antigenemia or circulating immune complexes from the virus or vaccine are the etiology. Histopathologic findings by punch biopsy show orthokeratosis, psoriasiform hyperplasia with spongiosis, focal lymphocyte groups resembling microabscesses in epidermis, marked edema, and superficial perivascular and perifollicular lymphocyte infiltrate in the upper dermis 5 . However, the benefits of the vaccine against measles, mumps, and rubella far exceed the minor effects from the self‐limited Gianotti‐Crosti syndrome.…”