Sadness and depression are associated with the feeling of nostalgia, and recent studies show that nostalgia might even be caused by these negative emotions.

Loneliness, loss, a sense of meaninglessness, boredom and even coldness can trigger nostalgia.

Swiss physician Johannes Hofer referred to nostalgia as a kind of homesickness, a desire to return to the beautiful, simpler times.

The feelings of nostalgia were usually melancholia, anxiety, and rumination. It was made into a neurological illness, which...

• Nostalgia was considered by the early 20th century a psychiatric illness caused by some traumatic experience of childhood. It had three components, cognitive, affective and conative.
• The cognitive part remembered old memories of the self, while the affective part was a sa...

It is understood as a longing for something long gone by, with a desire to relive the time, combined with a certain sadness while reminiscing about the particular life event.

The time of the past is remembered as an autobiographical memory of the self, something that the p...