In the movie The Southerner what is spring sickness?
Spring sickness was Scurvy from lack of fruits and vegetables (and therefore a lack of vitamin C) during the winter
Actually, it was Pellagra due to lack of niacin (vitamin B3). See: http://en.wikipedia.org/wiki/Pellagra
Yes, the little girl actually said the word pellagra in the movie, that she learned at school that they should eat more than just meat, they should eat vegetables.