The doctors—the ones who hadn’t wandered off or forgotten their own names—called it Nostomania. A pathological homesickness for a place that no longer existed. The suffix -manic meant the obsession had teeth. Lena’s mother was nostomanic. So was the man down the street who spent his days rebuilding a bicycle that would never move. So was the woman in the library who read the same phone book aloud, year after year, because the names were a litany of the living.

The feeling is frequently reported by refugees or migrants who feel a "disturbing" or unshakeable urge to return to a place that may no longer exist as they remember it.

Nostomania often stems from deep-seated psychological needs. It is rarely about the house itself, but rather what the home represents.