Ask the doctor: Can Raynaud’s syndrome also cause nails to turn black?

Raynaud’s disease causes some areas of the body, especially the fingers and toes, feel numb and cool during cold temperatures or stress (Shutterstock)

Dear Dr Ombeva,

Thank you for your exciting recent article on nail and nailbed infection onychomycosis. I have a question - Can Raynaud’s syndrome cause nails to turn black?