This article covers all the diagnoses that have occured more than once on House M.D.
Cancer (X times)
- Lucy Palmeiro - The Socratic Method - Liver Cancer - Treated
- Naomi Randolph - Babies & Bathwater - Small Cell Lung Carcinoma - Terminal
- Alex - Skin Deep - Testicular Cancer - Treated
- Kara Mason - Forever - Stomach Cancer secondary to Celiac disease - Patient refused treatment
- George - Que Sera Sera - Small Cell Lung Carcinoma - Terminal
- Abigail Ralphean - Merry Little Christmas - Langerhans Cell Histiocytosis - Treated
- Maggie - It's A Wonderful Lie - Breast Cancer - Treated
- Apple - Not Cancer - Stem Cell Cancer - Treated
- Morgan - Here Kitty - Appendix Cancer - Treated
- Tucker - Wilson - Acute Lymphoblastic leukemia - Treated
The Mistake is not included because the cancer was secondary to the treatment for the underlying condition.
Heavy Metal Poisoning
- Hank Wiggen - Sports Medicine - Cadmium - Treated
- Bob Palko - Clueless - Gold - Treated, but with serious complications
- [[]] - Whatever It Takes - Selenium - Treated
- Nozick - The Itch - Lead - Treated
Porphyria (3 times)
- Mark Warner - Honeymoon - Acute Intermittent Porphyria - Treated
- Alice Hartman - Finding Judas - Erythropoietic Protoporphyria - Treated
- Emmy - Let Them Eat Cake - Hereditary coproporphyria - Treated
Hemochromatosis (3 times)
Leona - Who's Your Daddy? - Complicated by Zygomycosis - Treated [[]] - The Jerk - Treated Jordan - Known Unknowns - Complicated by vibrio vulnificus - Treated
Leprosy (2 times)
Gabe Reillich - Cursed - Treated Lou - Dying Changes Everything - Lepramatous Leprosy - Treated
Thrombotic thrombocytopenic purpura (2 times)
Mary Carroll - Kids - Complication of pregnancy - Treated James Sidas - Ignorance is Bliss - Complication of drug abuse - Treated
Sepsis (2 times)
[[]] - House Training - Complication of Streptococcus - Terminal Penelope - Under My Skin - Complicaton of Gonhorrea - Treated
Strongyloides (2 times)
Thomas Stark - 97 Seconds - Terminal Hank Hardwick - Teamwork - Secondary to Crohn's Disease - Treated