Disease? Research for a novel...?

I know this is a weird question, but a minor character in a novel I'm trying to write has to be suffering from a chronic disease that prevents her from working. She's about 33 years old, and the year is 1922, so the disease has to have been diagnosed back then. If it makes a difference, the woman is severely malnourished, though this doesn't have to be the cause of her condition, and she lives in Germany (hyperinflation is occurring, though not as bad as it will become later). It doesn't have to be anything real specific. It's just a quick thing I can drop into the story.

Thanks in advance for any replies.