Seasonal affective disorder, also known as seasonal depression, causes depressive symptoms during only certain times of the year... and there's a pattern to it?!
but the difference lies in whether 
you feel emotionally down or not.
Die Frage ist, ob man sich
emotional erschöpft fühlt.
pero la diferencia está en 
si te sientes deprimido o no.
pero la diferencia está en 
si te sientes deprimido o no.
mais on y parvient en vérifiant
s’il y a dépression.
ma la differenza sta nel sentirsi giù o meno.
mas a diferença está se você 
se sente emocionalmente ruim.