[s2e11] Need To — Know

The team initially considers Huntington’s disease due to her muscle flailing and sudden irritability.

Following an earlier incident where she was potentially exposed to HIV, Dr. Cameron repeatedly avoids getting her test results. House eventually tricks her into a mouth swab by saying "I love you" to shock her into opening her mouth; she later learns her test is negative. [S2E11] Need to Know

The medical plot follows Margo Dalton, a high-achieving housewife and "supermom" who is admitted after experiencing uncontrollable muscle spasms that caused her to crash her car. The team initially considers Huntington’s disease due to

The episode title, "Need to Know," also refers to the sensitive personal information characters withhold from one another. House eventually tricks her into a mouth swab

House eventually discovers that Margo has been lying about several aspects of her life. She was taking her daughter’s Ritalin to maintain her "supermom" persona and secretly did not want to have more children, despite being on a demanding fertility treatment to please her husband.