I think that's Beriberi or thiamine (B1) deficiency. https://www.atlasobscura.com/articles/rice-disease-mystery-edo-tokyo-navy-beriberi https://www.atlasobscur

I think that's Beriberi or thiamine (B1) deficiency. https://www.atlasobscura.com/articles/rice-disease-mystery-edo-tokyo-navy-beriberi https://www.atlasobscura.com/articles/rice-disease-mystery-e...