An 18 month old baby and experiencing the world through senses is in Piaget's sensorimotor stage. The sensorimotor stage is the development of our senses such as, sense of sight, hearing, feeling, tasting and smelling. The sensorimotor stage is developed through 18 to 24 months of age.
If he sprained his ankle and you know he's n pain, then you should see the doctor or make an appointment. If the injury is severe then take him or her to the emergency room.
To do a adequate assessment and medical history to see if she would qualify for the medication. You cant just Rx a med because it worked for her friend.
Ideal drug is the term for the theoretical concept that a drug would have all good effects and qualities and no negative effects or qualities.