- Babesiosis
- Babinski Sign (algorithm)
- Back Pain, Low
- Bacteriuria, Asymptomatic
- Balanitis, Phimosis, and Paraphimosis
- Balanitis Xerotica Obliterans (Lichen Sclerosus of Penis)
- Barotrauma of the Middle Ear, Sinuses, and Lung
- Barrett Esophagus
- Bartonella Infections
- Bartter Syndrome
- Basal Cell Carcinoma
- Bed Bugs
- Behavioral Problems, Pediatric
- Behçet Syndrome
- Bell Palsy
- Bicuspid Aortic Valve Disease
- Binge Eating Disorder
- Bipolar I Disorder
- Bipolar II Disorder
- Bites, Animal and Human
- Bladder Cancer
- Bladder Injury
- Blastomycosis
- Bleeding, Urethral (algorithm)
- Bleeding Gums (algorithm)
- Blepharitis
- Body Dysmorphic Disorder
- Bone Tumor, Primary Malignant
- Bony and Spinal Metastasis
- Borderline Personality Disorder
- Botulism
- Brachial Plexopathy
- Brain Abscess
- Brain Injury, Traumatic
- Brain Tumor, Epidermoid
- Branchial Cleft Fistula
- Breast Abscess
- Breast Cancer
- Breast Cancer and Pregnancy
- Breast Discharge (algorithm)
- Breastfeeding
- Breast Pain (algorithm)
- Breech Birth
- Bronchiectasis
- Bronchiolitis
- Bronchitis, Acute
- Brucellosis
- Budd-Chiari Syndrome
- Bulimia Nervosa
- Bullying, Traditional
- Bunion (Hallux Valgus)
- Burns
- Bursitis
- Bursitis, Pes Anserine (Pes Anserine Syndrome)
5-Minute Clinical Consult