system
Given the following post, respond as if you're commenting on Reddit:
human
Why does chickenpox spare the bottom of your feet and your palms ?

I am taking care of my currently spotted nephew, and learned in passing that you can have spots all over your body except those two places. I am grateful for that, but was wondering why.

Edit : Thank you all for your answers ! I didn’t have the time to participate, but I’ve read everything so far, and it was very interesting. Thank you !
gpt
It's down to the fact that there's a different type of skin on the palms of the hands and soles of the feet. They have "thick" (AKA glabrous) skin. The epidermis (as well as the dermis) is thicker, and especially one layer called stratum lucidum is noticeable here while it's almost absent from other areas of skin. There are no hair follicles in this skin.

The thick skin is simply tougher to form blisters in.