How long it takes to show bed bug bite symptoms generally depends on:
- How sensitive your body is to bed bug bites.
- How much a person has been bitten.
For most people, bed bug bite symptoms show up in within 9 days. However, some people have severe reactions and the symptoms will show up almost immediately. Also, if somebody is heavily bitten they may will show symptoms sooner.
Check out Bed Bug Bite Symptoms for more information.