Patient's question:
My son is three and a half years old. I don't know what's going on, but he has inner eyelids. Every time one of his eyes becomes a double eyelid, he immediately gets a cold and fever and is sick for a few days. Is there a necessary connection between this change and the illness? Why does it happen every time? What is the principle behind it?Doctor's answer:
Loss of appetite refers to a lack of desire for food. Severe loss of appetite is called anorexia. The central control of appetite is located in the hypothalamus. It has extensive connections with the cerebral cortex. There are two appetite-regulating centers in the hypothalamus. One is the satiety center, located in the ventromedial nucleus. In animal experiments, destroying this center leads to hyperphagia and increased food intake. The other is the feeding center, located in the ventrolateral nucleus. Destroying this center causes animals to lose appetite and refuse to eat. These two centers mutually regulate each other to control food intake.