Answer:Is your mouth tingling as well?
Explanation:
The kind of infection would be a fungus infection, since you mention thickening and discoloration of the nail.
You can get it from saliva
Because these is where the best capillary bed is located protecting the calcaneus from being damaged. For Infants under 6 months puncture at the lateral side of the heel is the best site since they’re fingers are so small. A heel stick is best recommended to use for this test.