A simian crease is a single palmar crease as compared to two
creases in a normal palm. Simian crease occurs in about 1 out of 30
normal people, but is also frequently associated with other
conditions such as Down syndrome, Aarskog syndrome or fetal alcohol
syndrome.
Review Date: 05/01/2011
Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of
Pediatrics, University of Washington School of Medicine. Also
reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
