Hello, I can understand your concern. Red colored spots in the palate can be due to allergic reaction, viral infection or burns. If you are getting recurrent red spots, you should go for a blood test for allergy. It will analyze what substance you are allergic to so that avoid its exposure in the future. If you have habit of consuming drinks or food items while they are very hot, you should refrain from the habit and let it cool down a bit. It is also possible that the spots are due to viral infection as viral infection spots heal without treatment in 7-10 days. In that case, you can apply local Benzocaine gel (Mucopain) 3-4 times in a day for relief. Your saliva can be thick if you are suffering from periodontitis or pyorrhea. It is caused by accumulation of calculus, plaque and debris at the teeth and gums margins. In that case, you should consult a dentist and go for ultrasonic scaling which will remove the calculus, plaque and debris and bring gums to better health. I hope this information helps you. Thank you for choosing HealthcareMagic. I wish you feel better soon. Best, Dr. Viraj Shah