In more severe cases, treatment consists of:

Diuretics to increase urination, which are most effective for excess blood volume. Vasopressin receptor antagonists

Notable cases
1097: During the First Crusade, according to at least one chronicle, many crusaders died after drinking too much from a river while marching to Antioch. 1991, Andy Warhol: Five years after his death, Warhols family publicly accused the hospital where he had his gallbladder removed of causing his death by water intoxication administered post-operatively. A claimed autopsy weight of 68 kg (150 lb), with his weight being 58 kg (128 lb) when admitted, was cited as evidence that too much fluid had been given. October 24, 1995: Anna Wood, a 15-year-old Australian schoolgirl, died from the effects of water intoxication. November 16, 1995: Leah Betts, a British schoolgirl, died as the result of drinking too much water, though in the media her death was mistakenly attributed to taking an ecstasy tablet at her 18th birthday party. 2003: British actor Anthony Andrews survived a case of water intoxication. He was performing as Henry Higgins in a revival of the musical My Fair Lady at the time, and consumed up to eight litres of water a day. He was unconscious and in intensive care for three days. February 2, 2005: Matthew Carrington, a student at Chico State University in Chico, California, died as a direct result of a fraternity hazing ritual involving forced water intoxication.
People using drugs such as MDMA (often referred to colloquially as "Ecstasy") may overexert themselves, perspire heavily, feel increased thirst, and then drink large amounts of water to rehydrate, leading to electrolyte imbalance and water intoxication – this is compounded by MDMA use increasing the levels of antidiuretic hormone (ADH), decreasing the amount of water lost through urination. Even people who are resting quietly in extreme heat or humidity may run the risk of water intoxication if they drink large amounts of water over short periods for rehydration. Psychiatric conditions
Psychogenic polydipsia is the psychiatric condition in which patients feel compelled to drink large quantities of water, thus putting them at risk of water intoxication. This condition can be especially dangerous if the patient also exhibits other psychiatric indications (as is often the case), as the care-takers might misinterpret the hyponatremic symptoms. Iatrogenic
When an unconscious person is being fed intravenously (for example, total parenteral nutrition) or via a nasogastric tube, the fluids given must be carefully balanced in composition to match fluids and electrolytes lost. These fluids are typically hypertonic, and so water is often co-administered. If the electrolytes are not monitored (even in an ambulatory patient), either hypernatremia or hyponatremia may result.Some neurological/psychiatric medications (oxcarbazepine, among others) have been found to cause hyponatremia in some patients. Patients with diabetes insipidus are particularly vulnerable due to rapid fluid processing.