34 year old man with multiple erythematous plaques

Recently I saw this interesting patient: a 34 yr old factory worker presented with redness over the thigh and lower abdomen for a week. Started as "burning discomfort" over the left knee and then spread to the right knee, thigh and lower abdomen. He has no fever. No history of diabetes. He denied any insect bite. There was no preceding drug history.
Examination showed diffuse and glistening redness on the thighs and lower abdomen. On the right thigh, there was a single non hemorrhagic blister. Regional nodes were not enlarged. The lesion was not particularly tender. He was afebrile.





Impression: cellulitis - right thigh. Unusual site for cellulitis though. what is your take on this patient?

Henry