Can You Die From STD Crabs?

No. But you might scratch yourself to death while your waiting for the medicines to work. (joking)
Use the medicine. Treat you mattress, pillows, and blankets. Wash all your clothes, and treat your carpets, drapes, and pets that are in your room.
Then find out who gave them to you and get them to do the same treatments.

No, you can't die from a crab infestation, but you CAN get skin infections from your own scratching.

Yeah you can scratch urself to death