The answer is true.
Initially a person enjoys the physical and emotional response, as time goes on they need more of the drug just to feel "normal". They are always seeking the same feeling as the first high.
The answer would be offspring. Why? When a sperm and an egg meets, it creates a zygote.
Or above. Because there are two person needed. The fetus and the mother. The fetus need nutrient to develop in the mother's uterus.
That sounds to me like you may have just gotten a blister. They come back a little crusty sometimes. I’d recommend going to the dermatologist, there are a lot of great ways to clear up acne with special medical care! There are also some helpful over the counter creams and medications. It doesn’t sound like any kind of skin condition, but you would be able to confirm or deny that if you went to the dermatologist.
Hope that helped! :)