Research was carried out in the US on a small study group who complained of sudden "explosive" headaches.

BBC: Stroke 'link' to combining medicines

Disney's headaches seemed to worsen since the 1994 sudden death of its then-president, Frank Wells.

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Signs of a stroke include dizziness, sudden weakness or numbness, loss of speech or trouble talking, severe headaches and a reduction or loss of vision.

CNN: Study: Low cholesterol is not enough to prevent stroke