Serieux et Mas selon. Physical disorders in the prematurely retarded (Les troubles physiques chez les déments précoces. Annales medico-psychol. 11 and 12, 1902. Société medico-psych., Séance du 30 juin)

Physical disorders in prematurely weak-minded people, very carefully studied by Krapein'om, are expressed in the following: an increase, sometimes very sharp, tendon reflexes, an increase in mechanical excitability of nerves and muscles; dilated pupils, especially during the period of arousal; uneven pupils; cyanosis, edema, dermographism; increased saliva and sweating; change in heart rhythm; lowering temperature; wrong menstruation; an increase in the volume of the thyroid gland; bulging eyes, trembling, anemia; sleep disorder, increased body weight.