Good thread- year before all of Abby’s toenails just stopped growing. A few months later they kicked in again- she developed some granuloma that needed to be removed, but a year later they look fine mostly, one section looks suspicious but they are growing. She does have lots of horizontal ridges(common in kidney disease).
No one has had a good answer for it.. I do think the health of our nails can absolutely reflect other disease processes in our bodies.