The lack of sweat on the face may be anhidrosis, and different treatments are available depending on the etiology, such as congenital ectodermal dysplasia, secondary to systemic diseases, and so on. Congenital ectodermal dysplasia is often associated with congenital anomalies of the hair and sebaceous glands. Patients with this condition should work in a cool environment and avoid strenuous physical labor that increases the stimulation of body temperature; patients with secondary conditions such as mucous edema, diabetes mellitus, and desiccation syndromes should be treated for these primary conditions. Limitations of anhidrosis caused by dry skin can be local topical moisturizer. Anhidrosis means that sweat cannot be produced or discharged, and excessive heat production in the body that cannot be rapidly dispersed may lead to life-threatening circulatory failure, so it is important to go to the hospital in a timely manner to receive professional medical guidance and treatment.