What's the matter?
She has a stomachache.
What's the matter?
She has an earache.
What's the matter?
She has a runny nose / blocked nose.
What's the matter?
He has a headache.
What's the matter?
She has a toothache.
What's the matter?
She has a cough.
What's the matter?
He has a sore throat.
What's the matter?
They have a cold / flu.
What's the matter?
She has a fever.
What's the matter?
He has a backache.