Not enough mouth moist and felling of thirst. As it was said above the main symptoms of cholera cause body dehydration. From this dehydration, other symptoms come such as dry mouth, persistent thirst and feeling lack of moisture. This dehydration can cause even dry nose membranes, which become damaged due to lack of water inside. The second symptom feeling is extreme thirst. This feeling explanation is quite simple – the body needs watering and to drink is a most natural way to get water. That is why the infected patient becomes thirsty permanently. It is well known that 75% of human body is water, so when patients are very ill, they need to recover water loss and fill in this 75%.