Can seasonal depression be eradicated?

Seasonal depression is generally difficult to eradicate.

Seasonal depression is a depression related to seasonal changes, usually in autumn and winter, most cases due to reduced sunlight in autumn and winter, the body clock can not adapt to the shortening of sunshine time changes, so that the body's circadian rhythm and endocrine disorders, resulting in related depression performance. However, because this seasonal change cannot be artificially regulated, even if the symptoms can be alleviated by light therapy, psychotherapy, drug treatment, etc., the disease may relapse again in the second year, so it cannot be completely cured.