B
- B-cell lymphoma
- Baby acne
- Back pain
- Bacterial vaginosis
- Bad breath
- Bags under eyes
- Baker cyst
- Balance problems
- Baldness
- BANF
- Barber’s itch
- Bardet-Biedl syndrome (BBS)
- Barlow’s syndrome
- Barotitis media
- Barotrauma
- Barrett’s esophagus
- Bartholin’s cyst
- Basal cell carcinoma
- Basal joint arthritis
- BBS
- BDD
- Bed-wetting
- Bedbugs
- Bedsores (pressure ulcers)
- Bee sting
- Behcet disease
- Behcet syndrome
- Bell’s palsy
- Benign adrenal tumors
- Benign migratory glossitis
- Benign paroxysmal positional vertigo
- Benign paroxysmal positional vertigo (BPPV)
- Benign peripheral nerve tumor
- Benign prostatic hyperplasia (BPH)
- Berger’s disease
- Bicuspid aortic valve
- Bilateral acoustic neurofibromatosis
- Bile duct cancer
- Bile reflux
- Biliary atresia
- Binge drinking
- Binge-eating disorder
- Bipolar disorder
- Bird flu (avian influenza)
- Black hairy tongue
- Blackheads
- Bladder calculi
- Bladder cancer
- Bladder control, loss of
- Bladder exstrophy
- Bladder infection
- Bladder inflammation
- Bladder prolapse
- Bladder stones
- Blastocystis hominis
- Blastocystosis
- Blepharitis
- Blocked tear duct
- Blocked ureter
- Blood in urine (hematuria)
- BMS
- Body dysmorphic disorder
- Body lice
- Body odor and sweating
- Boils and carbuncles
- Bone cancer
- Bone infection
- Bone metastasis
- Bone spurs
- Borderline personality disorder
- Botulism
- Bowel incontinence
- Bowel obstruction
- BPH
- Brachial plexus injury
- Bradycardia
- Bradycardia-tachycardia syndrome
- Brain aneurysm
- Brain arteriovenous malformation
- Brain AVM (arteriovenous malformation)
- Brain metastases
- Brain stem tumor
- Brain tumor
- Brain tumor, child
- Brainstem tumor
- Breast cancer
- Breast cancer, inflammatory
- Breast cancer, male
- Breast cysts
- Breast infection
- Breast pain
- Broken ankle
- Broken arm
- Broken blood vessel in eye
- Broken collarbone
- Broken foot
- Broken hand
- Broken heart syndrome
- Broken hip
- Broken leg
- Broken nose
- Broken ribs
- Broken toe
- Broken wrist
- Bronchiolitis
- Bronchitis
- Brucellosis
- Brugada syndrome
- Buerger disease
- Bulimia nervosa
- Bullous pemphigoid
- Bundle branch block
- Bunions
- Bunyaviruses
- Burkitt lymphoma
- Burkitt’s tumor
- Burn injury
- Burning mouth syndrome
- Burning thigh pain
- Burns
- Bursitis
- Bursitis of the knee