What's this?
a first aid kit
What's the matter with him?
a toothache
What's this?
a thermometer
What is this?
a cast
What's the matter?
stomach ache
What's the matter with her?
earache
What's this?
a plaster
What's the matter with her?
a fever / a temperature
What does she do?
sneeze
What's this?
medicine
What' the matter with her?
feel dizzy