Abnormal circulation can cause skin discoloration, including blue, white or red hands, according to the University of Chicago Medical Center. However, poor circulation normally results in white or bluish skin, and redness results from a rush of blood returning to the deprived area, notes the Scleroderma Foundation and Mayo Clinic.
The most common symptoms of poor circulation are numbness, tingling, muscle cramps, and pain in the limbs, according to Healthline. The underlying symptoms causing the circulation problem may also cause symptoms that can help doctors diagnose a patient's problem. For example, Raynaud’s disease can trigger stinging and prickly sensations when the affected limbs are warmed. Skin redness can be caused by many conditions, including skin irritation, allergies and swelling, notes Healthline.