you have asked quite a tricky question let me explain it to you in simple words
medically known as an open comedo, plural comedones is a yellow or blackish bump or plug on the skin, and usually found on the face or the back. It is the one which leaves tinny holes , when you press it white color of oil comes out of it.
pimple, zit or spot is a kind of acne
, and one of the many results of excess oil getting trapped in the pores. it usually happens when the pores are not cleaned properly.
Madam you dont need to worry about spider bite
or spider venom.Pain from non-venomous spider bites typically lasts for 5 to 60 minutes while pain from venomous spider bites frequently lasts for longer than 24 hours. The rate of a bacterial infection due to a spider bite is low .9 percent.
I hope you are satisfied with the answer.
have a Great day