Hives, for example, come in two types -- acute and chronic -- and are usually caused by your body releasing histamine in reaction to an allergy. Histamine is an organic compound in your body responsible for triggering the inflammatory process.
If you have a checking account, the bank prints your account number on the bottom of your checks as the second number after your routing number. You can have the same account number at different institutions, but not the same account and routing number.
Normally you would use the routing number in conjunction with a deposit account at the bank. However, the number on the debit card doesn't have the account number for the deposit account. If you're the account holder, and they supplied you with checks, you can find it there.