Hyper-excitability of nerves may be related to mental overstress, or it may be caused by drug factors, hyperthyroidism and other reasons. 1. Excessive mental tension: If the mental stress is too great in the near future, the spirit is in a highly tense state, or playing mobile games or watching horror TV programs for a long time before going to bed, it is easy to lead to excessive neural excitability. 2. Drug factors: for example, the application of dopamine, atropine, norepinephrine and other drugs due to certain diseases may lead to easy excitation of the nerves, thus resulting in excessive nerve excitability. 3. Hyperthyroidism: Due to the overactive thyroid function of patients with this disease, the secretion of thyroid hormone increases, which can cause hyper excitability of nerves and symptoms such as panic and irritability. Hyper-excitability may also be caused by other reasons, we should find out the causes in time, if necessary, we need to seek medical treatment as soon as possible, after a clear diagnosis of the causes, the doctor will guide the treatment.