Injuries
- Basilar skull fracture
- Bed bug bite
- Bedbug bite
- Bee sting
- Bites - insects, bees, and spiders
- Bites - marine animals
- Bites - snakes
- Black widow spider bite
- Bleeding
- Blocked airway
- Blocked airway
- Blood loss
- Bone - broken
- Bone fracture
- Brain injury
- Breathing difficulties - first aid
- Broken bone
- Broken jaw
- Broken nose
- Broken or dislocated jaw
- Broken or knocked out tooth
- Brown recluse bite
- Bruise
- Burn from chemicals
- Burns