I have this in all of my toes. Only really shows up when I’m doing jiujitsu on cold mats, though.Raynaud's disease - Symptoms and causes
www.mayoclinic.org
"With Raynaud's, arteries to your fingers and toes become narrow and briefly limit blood supply when exposed to cold or stress. Over time, these small arteries can thicken slightly, further limiting blood flow."
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I have this in one toe.