Related Clues:
- Parasitic insects that suck
- They may bedevil dogs
- Reason for some head-scratching?
- Small quibbles
- Small grievances
- Targets of certain combs
- Problems that come to a head?
- Things of little consequence
- Parasites targeted with shampoo
- Bugs that school nurses check for
- Scalp woe
- Louse-y little bugs
- Pedants' pickings
- Cause of a lot of head-scratching
- Cause of a lot of head-scratching?