It usually starts with a letter from school, or a member of the family with an itchy scalp. There's a lice plague about, and it's time to check your family for signs of the little creatures or their eggs.
Would you know what to look for if you suspected lice? This video will show you how to recognise the difference between lice and dandruff. Once you've spotted the live lice, you know it's time to start thinking about treatment.