Although individuals who travel to high altitudes may experience symptoms of altitude sickness; those who are acclimated to high altitudes may also experience problems when they return to low altitudes. This is refered to a high atitude de-acclimatization syndrome (HADAS), and may be identified by symptoms such as sleepiness, insomnia, unresponsiveness, memory loss, fidgetiness, headache, trat pain or discomfort, coughing, chest tightness, becoming fustered inceased appetite, decreased appetite, diarrhea, abdominal distention, and abdominal pain. As related to HADAS Hyperventilation, often seen in atitude sickness, can cause: A) respiratory acidosis. B) respiratory alkalosis. metabolic acidosis. C) metabolic alkalosis. D) None of the answers are correct