Brain hemorrhage
From Memory Alpha, the free Star Trek reference.
A brain hemorrhage is a medical condition where there is bleeding in the brain.
In 2369, a technician on Memory Alpha suffered a brain hemorrhage as a result of being attacked by the non-corporeal Zetarians. (TOS: "The Lights of Zetar")
In 2372, The Doctor projected a 2% chance that Tom Paris might suffer a brain hemorrhage due to subspace stress during his transwarp flight. (VOY: "Threshold")
In 2373, a Pah-wraith possessing Keiko O'Brien's body told Miles O'Brien that even if he managed to stun her, it would only need a split second to cause a fatal brain hemorrhage. (DS9: "The Assignment")
The sentient ship Alice was capable of causing a cerebral hemorrhage in individuals who had linked to her neurogenic interface. She used this method to attack Abaddon in 2376, and did the same to Tom Paris. (VOY: "Alice")
