Neuropsychiatric symptoms include e.g. regular mood swings, memory disorders, chronic feelings of sadness and depression, low mood, increased anxiety, and concentration disorders.
Disturbances in the proper functioning of the nervous system as a consequence of Hashimoto's may result from the role of thyroid hormones in the maturation of the nervous system and enabling its physiological functioning.
In some sources describing this problem in more detail, you can find the statement that often, the psychological symptoms in patients with Hashimoto's can be much more severe for patients than the physical symptoms. It gives an idea of the difficulty they can pose in the daily functioning of patients.
