what can cause unexplained internal bleeding?
['Blunt trauma. Most people understand that falling from a height or being involved in a car accident can inflict great force and trauma upon the body. ... ', 'Deceleration trauma. ... ', 'Fractures. ... ', 'Pregnancy. ... ', 'Bleeding after surgery. ... ', 'Spontaneous bleeding. ... ', 'Medication. ... ', 'Alcohol abuse.']