- Ice Cream Headaches
- Ichthyosis Vulgaris
- Idiopathic Hypersomnia
- Idiopathic Thrombocytopenic Purpura
- Iga Nephropathy
- Illness Anxiety Disorder
- Impacted Wisdom Teeth
- Impetigo
- Incompetent Cervix
- Indigestion
- Infant Reflux
- Infantile Jaundice
- Inflammatory Bowel Disease
- Inflammatory Breast Cancer
- Influenza (Flu)
- Ingrown Hair
- Ingrown Toenail
- Inguinal Hernia
- Insomnia
- Insulin Resistance
- Internal Bleeding
- Interstitial Cystitis
- Interstitial Lung Disease
- Intestinal Ischemia
- Intestinal Obstruction
- Intracranial Hemorrhage
- Intussusception
- Invasive Lobular Carcinoma
- Iritis
- Iron Deficiency Anemia
- Irritable Bowel Syndrome
- Ischemic Colitis
- Islet Cell Tumors
- Itchy Skin(Pruritus)