What is it?
A pinhead-size brown mite that attaches itself to skin, increasing in size as it sucks up blood; can carry Lyme disease and Rocky Mountain spotted fever.
What to look for
If your child has been in a grassy, wooded area, regularly check her hair and body for ticks. The area around minor bites usually appears red.
What to do
Pull tick off with a pair of tweezers (save it in a jar in case you need to have it tested). Most bites don't require treatment, but see doctor if your child gets a rash, a fever, or muscle aches within a month of the bite.
How to prevent it
Dress your child in a light-colored long-sleeve shirt, and keep her pants tucked into her socks. Apply an insect repellent to exposed skin.