Hi,
Welcome to HCM.
Dizziness with,loss of appetite and weakness could be due to variety of causes or it could be transient.
Do you have any other symptoms with this dizziness?
It could be due to electrolytes imbalance or
hypotension or vasovagal but must be evaluated further if it remains constant.
Perhaps if the dizziness is not troubling your day to day work, then you may wait for few days.
Until then you should maintain proper hydration and electrolyte balance with some symptomatic antihistamines treatment like betahistidine or
cinnarizine 75 mg. Do not panic.
However if the problem is persistent, you should see a doctor at the earliest and get evaluated further.
I will suggest you undergo routine blood count,
ESR, blood electrolytes,
liver function tests to diagnose the cause for dizziness and loss of appetite.
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,