Skin Diseases III & IV

I had to shave off my soul patch a few days ago because the skin in that area was getting sore and chapped. Now it is flaking off in the shape of miniature corn chips.

Today I inspected the skin disease on my left thumb. I’ve had this one for a while and it hasn’t grown nor started hurting since it sprouted from under the nail. Here are a few photos for reference:

Here is an unmagnified view. The infected area is only about 7mm by 10mm in size. It is visible as a slightly discolored area on the skin and feels rough to the touch, like a callous.

Upon closer inspection, the area looks more severe.

At even closer view the infection seems sprawling, though not particularly distinctive or soulful.

Anyone have any idea what’s going on?