Season 3 Season 4 Season 5 Season 6
Research from Season 5
524: Both Sides Now
Fungus (mycotic diseases)
Pancreatic cancer
Propylene glycol
Vicodin (hydrocodone)
Drug abuse and addiction
Drug addiction treatment
523: Under My Skin
STDs
Sleep apnea
Toxic epidermal necrolysis
Multiple sclerosis
Gonorrhea
522: House Divided
Meningitis
Cochlear implants
NF2 tumors
Epstein-Barr virus
Eosinophilic pneumonia
Smoking and Tobacco
Sarcoidosis
521: Saviors
Multiple Sclerosis
Osteomyelitis
Cancer
Sporotrichosis
520: Simple Explanation
Obesity
Heart failure
Suicide
Multiple Sclerosis
Rheumatoid arthritis
Organ donation and transplantation
Blastomycosis
Leishmaniasis
519: Locked In
Organ Donation
Locked-In Syndrome
Brain tumor
Eastern Equine Encephalitis
Workplace safety and health
Rodent control
Leptospirosis
518: Here Kitty
Larva migrans
Churg Strauss syndrome
Skin cancer
Cushing's syndrome
517: The Social Contract
Phinaeus Gage
Schizophrenia
Doege-Potter Syndrome
Hypoglycemia
516: The Softer Side
Intersex disorders
Genetic mosaicism
Testosterone
Heroin
Methadone
Zollinger-Ellison Syndrome
Scleroderma
Magnetic resonance imaging (MRI)
Methadone
515: Unfaithful
Pneumocystis
HIV/AIDS
Hallucinations
Wiskott-Aldrich syndrome
514: The Greater Good
Retinoblastoma
Uterine myoma
Endometriosis
513: Big Baby
Clinical trials
Cold agglutinins
Pancreatic cancer
Multiple sclerosis
Patent ductus arteriosus
Splenic lymphoma
512: Painless
Chronic pain
Suicide
Epilepsy
511: Joy to the World
Shrooms
Acetaminophen overdose
Tuberculosis
Pregnancy
Underage drinking
Liver transplant
Asthma
Parthenogenesis
Leukemia
Eclampsia
510: Let Them Eat Cake
Huntington's disease
Clinical trials
Exercise-induced asthma
Sleep apnea
Weight-loss surgeries
Botulism
Guillain-Barre syndrome
Brain tumor
Hereditary Coproporphyria
509: Last Resort
Huntington's disease
Clinical trials
Facial nerve palsy
Lung cancer
Cushing's syndrome
Melioidosis
508: Emancipation
Prinzmetal angina
Arsenic
Bone marrow transplants
Munchausen syndrome by proxy
Iron overdose
507: The Itch
Agoraphobia
Mosquito bites
Post-Traumatic Stress Disorder
Lead poisoning
506: Joy
Mold
Pregnancy
Fifth disease
Cocaine
Leukemia
Organ donation and transplantation
Familial Mediterranean Fever
505: Lucky Thirteen
Ecstasy
Asthma
Spider bites
Renal Tubular Acidosis
Lymphangioleiomyomatosis (LAM) #1
Lymphangioleiomyomatosis (LAM) #2
Lymphangioleiomyomatosis (LAM) #3
Bone marrow transplant
Sjogren's syndrome
504: Birthmarks
Meckel's Diverticulum
SARS
Gallstones
Dilated cardiomyopathy
Iron overload
503: Adverse Events
Stroke
Brain tumor
Environmental health
Kluver-Bucy Syndrome
Waardenburg Syndrome
Roman-Ward Syndrome
Bezoar
502: Not Cancer
Organ donation and transplantation #1
Organ donation and transplantation #2
Corneal transplant
Heart transplant
Lung transplant
Liver transplant
Kidney transplant
Intestinal transplant
Cancer
Stem cells
501: Dying Changes Everything
B-12 deficiency
Pregnancy
Dealing with grief
Multiple Sclerosis
Lymphoma
Huntington's disease
Leprosy
