Other methods
Increased water intake may also help in acclimatization to replace the fluids lost through heavier breathing in the thin, dry air found at altitude, although consuming excessive quantities ("over-hydration") has no benefits and may cause dangerous hyponatremia. Treatment
The only reliable treatment, and in many cases the only option available, is to descend. Attempts to treat or stabilize the patient in situ (at altitude) are dangerous unless highly controlled and with good medical facilities. However, the following treatments have been used when the patients location and circumstances permit:

Oxygen may be used for mild to moderate AMS below 3,700 metres (12,000 ft) and is commonly provided by physicians at mountain resorts. Symptoms abate in 12 to 36 hours without the need to descend. For more serious cases of AMS, or where rapid descent is impractical, a Gamow bag, a portable plastic hyperbaric chamber inflated with a foot pump, can be used to reduce the effective altitude by as much as 1,500 m (5,000 ft). A Gamow bag is generally used only as an aid to evacuate severe AMS patients, not to treat them at altitude. Acetazolamide 250 mg twice daily dosing assists in AMS treatment by quickening altitude acclimatization. A study by the Denali Medical Research Project concluded: "In established cases of acute mountain sickness, treatment with acetazolamide relieves symptoms, improves arterial oxygenation, and prevents further impairment of pulmonary gas exchange." The folk remedy for altitude sickness in Ecuador, Peru and Bolivia is a tea made from the coca plant. See mate de coca.
Deaf-mute is a term which was used historically to identify a person who was either deaf and used sign language or both deaf and could not speak. The term continues to be used to refer to deaf people who cannot speak an oral language or have some degree of speaking ability, but choose not to speak because of the negative or unwanted attention atypical voices sometimes attract. Such people communicate using sign language. Some consider it to be a derogatory term if used outside its historical context; the preferred term today is simply "deaf". Historical usage of "deaf-mute" and other terms
United Kingdom
In 19th century British English "mute" and "dumb" meant "non-speaking", and were not pejorative terms. For example, in 1889 Queen Victoria instigated the Royal Commission on The Blind, the Deaf and Dumb etc.in the United Kingdom. The intention was to examine contemporary education and employment of blind or deaf people, with a view to improving conditions for them. The Oxford English Dictionary states that the North American pejorative usage of the word to imply stupidity was first noted in the UK in 1928. According to the OED, "deaf-mute" was coined in the early 19th century as a medical term for an inability to speak as a consequence of deafness. There is no mention of offensiveness of this term in the UK. North America
The primary definition of "dumb" in Websters Dictionary is "lacking intelligence" or "stupid". Its second definition of the word is "lacking the ability to speak ... now often offensive".