Acrocyanosis is a permanent blue discoloration, most often of the fingers, but also occasionally of the face and the feet.

Acrocyanosis is a benign and persistent disease. The main concern of patients is cosmetic. Left untreated, the disease does not worsen.

Yes

made by observation of the main clinical symptoms, including persistently blue and sweaty hands and/or feet and a lack of pain. Cooling the hands increases the blueness, while warming the hands decreases the blue color

a condition marked by symmetric cyanosis of the extremities.