• Back Pain

• Bacterial Arthritis (Septic Arthritis)

• Bacterial Vaginosis

• Bad Breath

• Baker's Cyst

• Baldness - See Alopecia

• Barotrauma (Airplane Ear)

• Bartholin's Gland Cysts and Abscesses

• Basal Cell Carcinoma - See Skin Cancer

• Bed Wetting

• Bedsore (Pressure Ulcer)

• Bell's Palsy

• Benign Tumors

• Berger's Disease - See IgA Nephropathy

• Bernard-Soulier Syndrome - See Congenital Platelet Function Defects

• Biceps Tendinitis

• Biceps Tendon Rupture

• Bile Duct Cancer

• Bile Duct Diseases

• Bile Duct Obstruction - See Cholestasis

• Biliary Obstruction - See Cholestasis

• Bipolar Disorder (Manic-Depressive Illness)

• Birthmarks

• Bites and Stings

• Black Eye

• Bladder Cancer

• Bladder Injury

• Blastomycosis

• Blepharitis

• Blindness

• Blocked Tear Duct

• Blood Clot - See Hypercoagulable States

• Blood Clot In Lung - See Pulmonary Embolism

• Bloodshot Eyes

• Body Dysmorphic Disorder

• Boils

• Bone tumors

• Botulism

• Bowel Incontinence - See Fecal Incontinence

• Bowel Obstruction - See Intestinal Obstruction

• Brachial Plexus Injury

• Bradycardia

• Brain Abscess

• Brain Attack - See Stroke

• Brain Injury - See Head Injury

• Brain Lymphoma

• Brain Metastases

• Brain Tumor (Primary Brain Tumor)

• Breast Cancer

• Breast Pain

• Breech Presentation

• Bronchiectasis

• Bronchiolitis

• Bronchiolitis Obliterans with Organizing Pneumonia (BOOP)

• Bronchitis

• Bronchopulmonary Dysplasia

• Brucellosis

• Bruise

• Bruxism

• Budd-Chiari Syndrome

• Bulimia

• Bullous Pemphigoid

• Burns

• Bursitis