B health terms
- Babinski's sign
- Baillarger's sign
- Ballance's sign
- Ballet's sign
- Banana sign
- Barr chromatin body
- Bartonella henselae
- Bartonella quinatana
- Bayes's theorem
- BBB
- Beh3et syndrome
- Bejel
- Bernard-Soulier syndrome
- Bile
- Bilirubin
- Biofeedback
- Biopsy needle
- Biotin
- Biovar
- Bipolar cell
- Blepharoptosis
- Blood-brain barrier
- Blood alcohol level
- Bloom's syndrome
- Blumberg's sign
- Boerhaave's syndrome
- Bone age
- Bordet-Gengou phenomenon
- Botox
- Botulinum toxin
- Botulism
- BrDu-banding
- Brill-Zinsser disease
- Brudzinski's sign
- Brunnstrom method
- Brims' nystagmus
- Bruxism
- Buerger's disease
- Buffer
- Buffers in whole blood
- Bulbus cordis
- Bulla
- Bullous emphysema
- Bullous myringitis
- Bumke's pupil
- Buoyant density
- Buphthalmia
