There is a special type of depression called "seasonal depression" which follows exactly such a phased development. Many patients have already discovered that sunlight can be relieving and often travel to sunny locations for long vacations. This is unfortunately not always possible...

An obviously effective therapy, for this special group of patients, has therefore been light therapy. Special light sources are used with a particularly high intensity (up to 10000 watt). The light treatment is used daily for approx. 30-40 minutes, whereby the patient sits in front of the light source. The light activates the serotonin production in the brain, which helps in relieving the depressive symptoms.