B-cell lymphoma Back pain - nonspecific Bacteremia with sepsis Bacteremic shock Bacterial arthritis Bacterial diarrhea Bacterial labyrinthitis Bacterial liver abscess Bacterial overgrowth - intestine Bakers cyst Balanitis Barbers itch Barbiturate intoxication and overdose Barlows syndrome Barotitis media Barren Barretts esophagus Bartonellosis Bartter syndrome Basal cell carcinoma Basal cell nevus syndrome Basal ganglia dysfunction Bathing trunk nevus Batten disease Battered child syndrome Beckers muscular dystrophy Beckwith-Wiedemann syndrome Bedwetting Beef tapeworm Bells palsy Benign breast disease Benign ear cyst or tumor Benign headache Benign intracranial hypertension Benign migratory glossitis Benign paroxysmal peritonitis Benign positional vertigo Benign prostatic hypertrophy (hyperplasia) Benign skin tumors - keratosis Bereavement Bergers disease Beriberi Bernard-Soulier syndrome Beta galactosidase deficiency Bezoar Bicipital tendinitis Biduoterian fever Bilateral Acoustic Neurofibromatosis (BAN) Bilateral hydronephrosis Bile calculus Bile duct cancer Bile duct obstruction Bile duct stricture Bilharzia Biliary atresia Biliary colic Binge-purge behavior Bipolar affective disorder Bird breeders lung Birth-acquired herpes Birthmarks - pigmented Bladder calculi Bladder cancer Bladder infection Bladder injury Bladder outlet obstruction Blastomycosis Bleeding disorders Bleeding esophageal varices Blepharitis Blepharospasm Blind loop syndrome Blindness - color Bloch-Sulzberger syndrome Blocked nasolacrimal duct Blood clot - lung Blood clot in the legs Blood clots Blood pressure - high Blood pressure - low Blood transfusion reaction Blounts disease Blunt myocardial injury Body dysmorphic disorder Body lice Boils Bone tumors Bonnevie-Ullrich syndrome Borderline personality disorder Borreliosis Botulism Bowel obstruction Bowlegs BPD Brachial palsy in newborns Brachial plexopathy Bradycardia-tachycardia syndrome Brain bleeding Brain herniation Brain injury - infants Brain lymphoma Brain tumor - metastatic (secondary) Brainstem glioma Branchial cleft cyst Breakbone fever Breast abscess Breast cancer Breast milk jaundice Breath holding spell Brief reactive psychosis Brill-Zinsser disease Briquets syndrome Brittle bone disease Brittle bones - premature infants Bronchiolitis Bronchitis Bronchitis - chronic Bronchopneumonia Brucellosis Bruised kidney Bruxism Bubonic plague Budd-Chiari syndrome Buergers disease Bulbous nose Bullous myringitis Bullous pemphigoid Bump on the eyelid Bunions Bursitis Byssinosis