Microbial deterioration of archeological marble was studied on samples taken from three locations in Cairo, Egypt; Mohamed Ali palace, El-Ghory Mosque and Mosque of El-Kady Abdel-Baset.
If you are outside in extreme cold weather and you have cold hands, you should watch for warning signs of frostbite. Other signs and symptoms to watch for when you have cold hands include: 1  Cold feet or toes.  Changes to the color of the skin on your hands, such as blue or white skin.
Toes that are numb and turn purple are extremely cold toes or the result of an underlying medical condition. If you are having recurrent problems with numb, discolored toes, this needs medical attention. If you have poor circulation, this can cause numbness in your toes, which may be accompanied by toe paresthesias. This includes sensations of tingling, burning, and pins and needles. Nerve damage, some diseases and an injury to your toe can also cause numbness, and make your toes change colors.