Brief Answer:
It needs further evaluation.

Detailed Answer:
Hello,
Welcome to health care magic,

I have carefully seen the picture you uploaded.

Yellow spots on roof of mouth can occur either due to intake of too much of spicy,acidic foods or acid re-flux from the stomach or oral infection.

But this is hard to tell without examining your mouth with complete medical history.

So,you should consult some local doctor or GP who can evaluate you by perform a physical examination and some relevant tests.

If it is an bacterial infection he will prescribe you a course of antibiotics or if it is a fungal infection he will prescribe you anti-fungal medication.

Treatment is mainly depend upon the underlying cause but symptomatic treatment is helpful.

Meanwhile you should take below measures which can be beneficial to you to get rid off yellow discoloration.

1) Maintain good oral hygiene and avoid hot and spicy foods.
2) Antiseptic mouth wash (chlorhexidine) for gargles to prevent secondary infection.
3) Topical analgesic gel like benzydamine which is also having a local anesthetic effect if there is pain.
4) Take folic acid with vitamin b complex.

Hope this information is helpful.

Regards,

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Brief Answer:
welcome.

Detailed Answer:
Hi,

You are most welcome.

And if you need more clarification then feel free to ask me.

Wishing good health.

Regards,

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