Hypertonic dehydration is usually due to the loss of both water and sodium, but more water than sodium deficiency, so that the serum sodium is higher than the normal range and therefore the extracellular fluid is hypertonic. In these patients, the early clinical manifestations are that the patient will have significant thirst and will experience weakness, peripheral tenderness, decreased urine volume, high urine specific gravity, and the patient will have a dry mouth, poor skin elasticity, and sunken eye sockets. In addition, the circulatory system may experience chest tightness, shortness of breath, palpitations, a feeling of suffocation in the precordial region, and even dyspnea when breathing, as well as clinical symptoms such as dizziness and headache. Once the patient has severe hallucinations or even coma, it belongs to the clinical manifestations from early to middle or even late stage.