Get Virtual Care
For Businesses
About Us
A member asked:
My knuckles turn greyish when cold why?
3 doctors weighed in across 2 answers
Vasoconstriction: Your skin has blood vessels carrying oxygenated red blood cells to your tissues. When your hands get cold, the blood vessels constrict (vasoconstriction), and less red blood cells can move through your skin, so the color of your skin appears lighter.
Answered 1/6/2019
5.2k views
Blood supply: When the end points on our bodies, including our hands and fingers, get cold, our circulation efficiently sends blood supply to the center (more important) region and organs of our body. This area you mention is less important under such circumstance so the blood will leave the area leaving it a bloodless and colorless grey.
Answered 1/6/2019
5.2k views
Related Questions
A member asked:
Why does my 17 yo son 's fingers and knuckles swell only in extreme cold?
A doctor has provided 1 answer
A member asked:
My hands (from a little below my knuckles and up) turn super red when I get nervous, while theyre red they turn cold no matter what temp it is outsid
A doctor has provided 1 answer
A member asked:
My hands are still cold & knuckles off & on turning a purplish blue? Why is this happening, is there something wrong with me? Never had this problem before, my body feels warm, it's just my hands. They feel like icicles, they are so cold. My knuckles have
3 doctors weighed in across 3 answers
A member asked:
I cracked my knuckles when it was cold outside maybe six degrees outside and now both hands are in pain from cracking my knuckles. How to relieve pain?
A doctor has provided 1 answer
People also searched for:
Right hand has been turning a greyish blue and the knuckles a darker greyish purple. This has been happening for a few days and a couple times it was bad enough itliterally looked dead. I am a 29 yo female, in fairly good shape. Normaly have both low bloo
Bluish-gray hand and severe headache, should I be concerned?
Hello Dr. I have notice two days ago that my left hand is now gray/blue and the other is a normal red colour. What could be the problem?
I have a greyish line going down two of my nails, one on my hand and the other on my toe nail. It doesnt hurt or anything. I have waited 3 weeks and it hasnt changed color/expanded or faded away. Its still there the same day it appeared.
Had a brain MRI and found poor gray white matter (24%), black holes 47%, and hippocampus 87%. Radiologist said ok. Should I get another opinion as a 45 year old woman with memory loss, hand tremors, off balance?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Download HealthTap
Video visit and message your doctor
