Common causes of dry mouth and thirst include physiologic and pathologic factors such as diabetes, hyperthyroidism, antidiuretic hormone abnormalities, and dry syndrome.
1. Physiological factors: due to the hot weather or dry external environment, resulting in a large amount of water discharged from the body, supplemented by insufficient water; eating more salty or spicy food, especially particularly salty things, so that the body’s osmotic pressure rises, so leading to dry mouth and thirst.
2. Pathologic factors.
(1) Commonly, there are diabetes mellitus, in addition to dry mouth and thirst, there will be excessive drinking, urination, polyphagia, weight loss, etc., and there may be abnormalities in checking blood sugar.
(2) Seen in diffuse goiter with hyperthyroidism, due to the development of hypermetabolic syndrome, manifested by dry mouth, fatigue, excessive sweating, emaciation and other symptoms, check the blood thyroid hormone level is abnormal.
(3) When the antidiuretic hormone secreted by the hypothalamus and pituitary gland is abnormal, the patient may also have symptoms such as dry mouth, thirst, and excessive urination, and the specific gravity of urine may be found to be abnormal when the patient goes to the hospital for examination.
(4) In dry syndrome, in addition to dry mouth and thirst, there will be fewer tears in the eyes, and if you check the related immunity indexes, they will be abnormal.
There are many possible causes of dry mouth and thirst, if the symptoms are not relieved for a long time, you should go to the hospital as soon as possible for examination, to determine the cause of the disease, and then symptomatic treatment.