Gradual freezing, also called amyotrophic lateral sclerosis in medicine, is a motor neuron disease and a peripheral paralysis involving upper and lower motor neurons.

The early symptoms of gradual freezing may be sudden fall and loss of exercise ability. With the deepening of the course of the disease, there will be different degrees of muscle atrophy, and finally there will be respiratory disorders.

Because the pathogenesis of gradual freezing is not clear in medicine, we can only take some drugs such as Xieli Riluzole tablets to maintain it, so as to delay the time of patients' respiratory disorders as much as possible, and then delay the time of tracheotomy and improve the quality of life of patients as much as possible.