Uneasiness or distress that results from a lack of environmental stimulation, as when living in a remote, sparsely populated region or in a small, enclosed space.

• 船舱病，幽闭烦躁症：由于缺乏外界激励而导致的不快或痛苦，如住在一个偏僻的，人烟稀少的地区或一个很小的、封闭的空间内