Scientific studies show that many different genes work together with things in the environment to put a child at risk for autism spectrum disorder (ASD). Scientific studies do not show that vaccines cause ASD.

Information and guidance about viral infections.

A pink rash that is all over the body. The rash is part of a viral illness.

Going to the doctor can be stressful for any child. For a child with autism spectrum disorder (ASD), there may be extra challenges because of sensory, communication, and other symptoms. Here are some tips to help make visiting the doctor easier.

Care advice on vomiting in children 1 to 5 years of age.

Care advice on vomiting in children 6 to 21 years of age.

Causes of and care advice on vomiting in breastfed babies.

Causes of and care advice on vomiting in formula-fed babies.

If the vomiting is associated with an infection, the incubation and contagious periods depend on the type of germ causing the infection.

Irritation of the vulva (external genitals) from soap or other irritants. Mainly occurs in young girls before school age.

Research shows that about 1 in 3 young children with ASD has tried to wander off. This behavior may continue to happen in older children and even teenagers and adults with ASD. This is concerning since many people with ASD may not be able to share their names, addresses, or phone numbers if they get

A wart on the bottom of the foot (plantar surface). Viral infection of the skin.

Warts are small raised growths that have a rough surface. Viral infection of the skin.

Warts are skin infections caused by human papillomavirus (HPV).