Dr. Mersch received his Bachelor of Arts degree from the
University of California, San Diego, and prior to entering the
University Of Southern California School Of Medicine, was a
graduate student (attaining PhD candidate status) in
Experimental Pathology at USC. He attended internship and
residency at Children's Hospital Los Angeles. Dr. Shiel received
a Bachelor of Science degree with honors from the University of
Notre Dame. There he was involved in research in radiation
biology and received the Huisking Scholarship. After graduating
from St. Louis University School of Medicine, he completed his
Internal Medicine residency and Rheumatology fellowship at the
University of California, Irvine. He is board-certified in
Internal Medicine and Rheumatology. Roseola is a mild illness
caused by a virus infection. Roseola has a sudden onset and
short duration, and it most commonly affects young children.
Roseola is most common in children 6 to 24 months of age. The
average age at onset is around 9 months. Less frequ