PFEDS (Acronym: Post Final Examination Disorientation Syndrome)

  A condition that may immediately follow the end of final examinations that may include any or all of the following symptoms: extreme disorientation, insomnia, confusion, slight depression, inability to focus, reduction in attention span, erratic eating habits, aversion to sunlight, apathy, lack of emotion, sexual frustration, low self esteem.

 Generally theorized to be a mild form of separation anxiety or reaction to a sudden lack of obligations.