The main organism associated with ecthyma gangrenosum is "Pseudomonas aeruginosa". However, both Camel Contagious Ecthyma and Camel Papillomatosis cause indistinguishable symptoms under similar conditions. It was given the name "ecthyma gangrenosum" by Hitschmann and Kreibich. Ecthyma may be accompanied by swollen lymph nodes in the affected area. Ecthyma is a variation of impetigo, presenting at a deeper level of tissue.