Increased intracranial pressure, or intracranial hypertension - a condition that can occur suddenly or develop gradually. High intracranial pressure - a fairly common disorder that can be caused by many reasons.
Intracranial hypertension first described in the 16th century Gerrit de Veer - Dutch navigator and explorer. He discovered the toxic effects of the liver of the polar bear during one of his early trips to the Arctic. Several members of the expedition to taste dishes from the polar predator liver and nearly died from a strong increase in intracranial pressure caused by a lethal dose of vitamin A, which contains a polar bear liver.
