As a parent or guardian, you know when your child is feeling better or is still under the weather. But sometimes it can be important to make sure that they are well enough to return to school while making sure they are not at risk of spreading the infection or illness to other children. We've got a handy guide below to help you know when it's safe for everyone for them to return. We cover the 16 most common childhood illnesses from diarrhoea and vomiting to head lice, chicken pox and scarlet fever.

Chicken Pox - Once all spots have crusted/scabbed over.

Conjunctivitis - No need to stay off, but the school/nursery should be informed.

Diarrhoea and Vomiting - 48 hours from the last occurrence.

Glandular Fever - No need to stay off, but the school/nursery should be informed.

Hand, foot & mouth - No need to stay off, but the school/nursery should be informed.

Impetigo - 48 hours after starting antibiotics or once the lesions are crusted and healed.

Measels or German Measels - 4 days after onset of rash.

Mumps - 5 days after the onset of swelling.

Scabies - After the first treatment.

Scarlet Fever - 24 hours after starting antibiotics.

Slapped  Cheek - No need to stay off, but the school/nursery should be informed.

Whooping Cough - 48 hours aftr starting antibiotics.

Flu - Once fully recovered.

Head Lice - No need to stay off, but the school/nursery should be informed.

Threadworms - No need to stay off, but the school/nursery should be informed.

Tonsilitis - No need to stay off, but the school/nursery should be informed.

If in doubt, speak to your doctor or pharmacist. They'll be more than happy to provide any information and advice they can.