- I 131 Tosotumomab
- Ibritumomab tiuxetan
- Ibuprofen
- Ibutilide
- Idarubicin
- Idiopathic (autoimmune) thrombocytopenic purpura
- Idiopathic fibrosing interstitial pneumonia
- Idiopathic inflammatory myopathies
- Idiopathic pulmonary fibrosis (IPF)
- Idiopathic pulmonary hemosiderosis
- Idiopathic thrombocytopenic purpura
- Id reaction
- IgA deficiency, selective
- IgA nephropathy
- IgA nephropathy, classification and findings in
- IL-11
- IL-2
- Iletin II
- Ileus, acute paralytic
- Iliotibial band syndrome
- Imatinib mesylate
- Imbalance
- Imidazoles
- Imipramine
- Immobility
- Immobility in elderly
- Immune complex disease
- Immune deficiency, cellular, infection with
- Immunity, ineffective humoral
- Immunocompromised patients
- Immunodeficiency, common variable
- Immunoglobulin A deficiency, selective
- Immunoglobulin A nephropathy
- Immunosuppressive drugs, in breast-feeding women
- Immunotherapy
- Impetigo
- Implants, contraceptive
- Impotence
- Incest
- Incontinence, fecal
- Incontinence, urinary
- Incontinence, urinary, in elderly
- Indapamide
- Inderal
- Indinavir
- Indocin
- Indometh
- Indomethacin
- Ineffective humoral immunity
- Infarction
- Infections
- Infectious esophagitis
- Infectious mononucleosis
- Infective endocarditis
- Infertility
- Inflammatory bowel disease (IBD)
- Inflammatory ovarian tumor
- Influenza
- Injury
- Innohep, in prevention of venous thromboembolism
- Inocybe poisoning
- Insect bites
- Insecticide poisoning
- Insomnia
- Insomnia, benzodiazepines for
- Insulin
- Insulinoma
- Insulin preparations
- Intal
- Intercourse, painful
- Interferon alfa-2a
- Interferon alfa-2b
- Interstitial cystitis
- Interstitial lung disease
- Interstitial nephritis
- interstitial pneumonia, idiopathic fibrosing
- Interstitial pneumonia, idiopathic fibrosing
- Interstitial pneumonia, usual
- Interstitial pneumonitis, acute
- Interstitial pneumonitis, nonspecific
- Intertrigo
- Intestinal disorders, fecal leukocytes in
- Intestinal ischemia
- Intestinal ischemia, acute
- Intestinal ischemia, chronic
- Intestinal tuberculosis
- Intra-abdominal infections, anaerobic
- Intra-abdominal sepsis, antimicrobial therapy for, pending organism ID
- Intracerebral hemorrhage
- Intracerebral hemorrhage, major stroke subtypes
- Intracranial aneurysm
- Intracranial arteriovenous malformations
- Intracranial hypertension, benign
- Intracranial mass lesion, headache from
- Intracranial metastases
- Intracranial pressure, increased
- Intracranial tumor, primary
- Intracranial venous thrombosis
- Intramedullary tumors, spinal cord
- Intraocular pressure, increased
- Intrauterine devices (IUDs)
- In vitro fertilization (IVF)
- Involuntary weight loss
- Iodides, in breast-feeding women
- IPF
- Irbesartan
- Iressa
- Irinotecan
- Iron deficiency anemia
- Iron poisoning
- Irritable bowel syndrome
- Ischemia, intestinal
- Ischemia, limb, acute
- Ischemic colitis
- Ischemic hepatopathy
- Ischemic stroke
- Islet cell tumors
- Isoniazid
- Isoptin SR
- Isospora
- Isospora belli, chronic diarrhea from
- Isosporiasis
- Isotonic hyponatremia
- Isradipine
- Itch(ing)
- ITP
- IUDs (intrauterine devices)
- IV drug use
- IV drug use, infection in
- IVF