Also known as: Multiple personality disorder
14-year-old girl presenting with various symptoms that turn out to be manifestations of different alter personalities, developed as a response to trauma from her father's death in a car accident when she was 2. Different alters exhibit different physical symptoms including allergic reactions, vision loss, and paralysis.
Occult choriocarcinoma affecting the placenta that initially presented as pregnancy with elevated hCG levels. The tumor explains the patient's vaginal bleeding and elevated blood pressure while not being visible on initial ultrasound.
Genetic condition that killed 4-year-old Drew five years prior, initially misdiagnosed as Berger's disease. House diagnoses this posthumously by examining the body and discovering the father is an asymptomatic carrier who passed the gene to both sons. The younger brother is now identified as having the condition and can be treated.