By the age of 3 months, a parent should check for the following symptoms and in case of lacking criteria, one should immediately seek advice from a pediatrician.
General Screening
Observe a child’s sleeping position and monitor if the child holds the head in a prone position or if it is sleeping on the tummy.
Observe if a child squeaks and watch for the giggle or laughter.
Observe if a child puts a finger or fist in and out of the mouth.
Vision Screening
Observe if a child notices toys, people around and turns its head to look at the faces of other people when you hold the child in your arms.
Observe if the child watches its own hands.
Hearing Screening
Make sound at the level of an infant’s ear from behind with a cup/katori, spoon or a low frequency rattles if available and observe for a startle response.
Observe if your child becomes quiet or smile in response to your voice even if you can’t be seen.