In the midto late 1990s, nearly a decade after the 1989 Exxon Valdez oil spill, female harlequin ducks (Histrionicus histrionicus) suffered reduced winter survival in oiled areas of Prince William Sound, Alaska, USA, relative to unoiled areas. We conducted follow-up studies from winters 2000–2001 to 2002–2003 to determine whether differential survival persisted and to evaluate whether individua...

A 63-year-old male experienced 3 years of excruciating, right retro-orbital, 15–90 minute headaches occurring 1 to 3 times daily associated with ipsilateral lacrimation, ptosis, and facial congestion. The episodes began after a complicated right root canal procedure. He also reported separate episodes of distinct left sided facial flushing triggered by exertion as evidenced by a photo that he p...

We report the development of Harlequin Syndrome following thoracic epidural placement in a pediatric patient. Unilateral facial flushing with contralateral pallor and anhidrosis is the clinical presentation. This syndrome is typically benign. When related to regional anesthesia, treatment involves reducing the local anesthetic infusion or stopping it altogether.