Hi,
Welcome to health care magic,
Dizziness with sweating could be due to variety of causes or it could be transient.
Does your son has any other symptoms with this dizziness and sweating?
Perhaps if the dizziness is not troubling his day to day work, then you may wait for few days.
Until then you maintain his proper hydration and electrolyte balance with some symptomatic antihistamines treatment like betahistidine. Do not panic.
However if the problem is persistent with sweating contiously, you take him to the doctor at the earliest and get evaluated further.
I will suggest you undergo routine blood count,
ESR, blood electrolytes, tests for vestibular (balance) system like electronystagmography t
o diagnose the cause for dizziness. Your local physician or GP will know about the test. He/she will can order the test after complete history and thoroughly clinical examination like temperature, pulse, blood pressure which will enable us to arrive a diagnosis.
Regards,