Erythema Toxicum 
Read about a benign condition that is sometimes confused with more a more serious newborn illness. From Dr Greene.
http://www.drgreene.com/21_1084.htmlDermatlas 
Offers an erythema multiforme image collection.
http://dermatlas.med.jhmi.edu/derm/result.cfm?Diagnosis=34
Yahoo! Group: Erythema Nodosum Support Group 
Open to those with EN and related disorders. Find joining instructions.
http://health.groups.yahoo.com/group/erythema_nodosum_Group/
VisualDxHealth: Erythema Nodosum 
Offers a condition overview, treatment information, and pictures of EN.
http://www.visualdxhealth.com/adult/erythemaNodosum.htm