So we’ve heard of lots of celebs dropping out of projects due to “exhaustion” and "wisdom teeth operations gone wrong." But funny lady Parker Posey is leaving the Playwrights Horizons production of “This” due to a bout of Lyme disease. Symptoms of Lyme disease include body itching, joint inflammation, stiff neck, and strange and unusual behavior. Remember Irene from "The Real World: Seattle"? Poor Parker. [New York Times]

Read on to discover some more celebrities with unusual illnesses.