Livedoid dermatitis (also known as Embolia cutis medicamentosa and Nicolau syndrome) occurs immediately after an intramuscular injection and is characterized by intense pain and blanching of the overlying skin known as ischemic pallor.
This page contains content from the copyrighted Wikipedia article "Livedoid dermatitis"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.