• Nausea

  These are sometimes followed by difficulty breathing during exertion, muscle weakness & pain, twitching, or cramping, nausea, vomiting, thirst, and a dulled ability to perceive and interpret sensory information. [en.wikipedia.org]

In more severe cases, treatment consists of: Diuretics to increase urination, which are most effective for excess blood volume. [en.wikipedia.org]

[…] hyponatremia may result. [8] Some neurological/psychiatric medications ( Oxcarbazepine, among others) have been found to cause hyponatremia in some patients. [9] Patients with diabetes insipidus are particularly vulnerable due to rapid fluid processing. [10] Pathophysiology [en.wikipedia.org]

Both cerebral edema and interference with the central nervous system are dangerous and could result in seizures, brain damage, coma or death. [11] Prevention [ edit ] Water intoxication can be prevented if a person's intake of water does not grossly exceed [en.wikipedia.org]