Culture shock is a term used to describe the feelings of uncertainty, confusion, or anxiety that people may experience when moving to a new country or experiencing a new culture or surroundings. It is the personal disorientation a person may feel when experiencing an unfamiliar way of life due to immigration or a visit to a new country, a move between social environments, or simply transition to another type of life. Culture shock can occur when people move to another city or country, go on vacation, travel in retirement or for business, or study abroad for school.

Culture shock can be described as consisting of at least one of four distinct phases: honeymoon, negotiation, adjustment, and adaptation. The honeymoon stage is characterized by excitement and curiosity about the new culture. The negotiation stage is when the differences between the old and new culture become apparent and may lead to feelings of frustration and homesickness. The adjustment stage is when one begins to feel more comfortable and familiar with the new culture. Finally, the adaptation stage is when one fully embraces the new culture and is able to function in both cultures.

Symptoms of culture shock can vary, but may include anxiety, confusion, homesickness, anger, boredom, compulsive eating/drinking/weight gain, excessive concern over cleanliness, excessive sleep, feelings of helplessness and withdrawal, and getting "stuck" on one thing. Coping with culture shock requires patience and time, and it is normal to experience a cultural adjustment due to an unfamiliarity with the weather, local customs, language, food, and values. Seeking support from mental health professionals may also be helpful.