Депрессия, говорите? Энцефалит, говорите?
"... No less arresting is Lyme disease, which comes from a bite of a deer tick smaller than a pinhead. If undetected, it can lie dormant in the human body for years before erapting in a positive fiesta of maladies. This is a disease for the person who wants to experience it all. The sympthoms begin with headaches, fatigue, fever, chills, shortness of breath, dizziness, and shooting pains in the extrimities, then march on to cardiac irregularities, facial paralysis, muscle spasms, severe mental impairment, loss of control of body functions, and - not surprising in the circumstances - chronic depression..."
Bill Bryson "A Walk in the Woods"
А вы говорите, депрессия.