Answer:
Infectious diseases is a communicable disease because it can be spread from one person to another.
Explanation:
I think it's this but I don't fully know
https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0https://youtu.be/PeBUSv3zUQ0
It can be a chemical imbalance in the brain, a traumatic event, bad home life, etc.
Because the kidneys cant get rid of all toxins in the body.