A spontaneous attack of red ear syndrome (left image)
Giorgio Lambru, Sarah Miller and Manjit S Matharu
CC BY 2.0
"<a rel="nofollow" class="external text" href="http://www.thejournalofheadacheandpain.com/content/14/1/83">The red ear syndrome</a>", <i>The Journal of Headache and Pain</i> 2013, 14:83. doi: 10.1186/1129-2377-14-83