For nearly 2 years I am suffering from this, what started as a small white patch in one gum area has now slowly grown to white patch which then turn to red to for gum areas. No burning or pain while eating normally. But a tingling sensation when I eat something hot or spicy. I have tried few oral doctors who did deep cleaning, gave me oxidant medicines, gave me turbocot to apply as oral cream steroid. I even lost weight in between for update my lifestyle, proper brushing. But all in vain. It is now spreading to 1 gum at a time and now I am frustrated. I need someone who could help me get rid of this. Please can someone guide me on exactly what is this and how can I resolve this.
From last 1 week I am having roughness on tip of tongue , no pain no problem while eating just a roughness please check
Could it be cancer ?
I am really worried
Please see the attached photo ,aria is circled

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Timeline
14th July sudden pain when eating food......it was like some hard thing come in food.....pain was very much.....applied toothpaste and then slept...tooth became sore
but no constant pain....now pain only on biting......at an angle. went to dentist, he said their is deep distal caries because of wisdom tooth....so removed wisdom tooth on 14th August.after
10 days stitches removed.....now biting pain increased..it is only when I bite down at that angle..and goes away instantly...on 3rd September I did temporary filling....doctor said evaluate for 21 days..if symptoms then rct..but there was no symptom apart from that biting pain..so permanent filling yesterday...doctor also said that decay was not as deep as indicated in x-ray...now there is permanent GIC filling...yesterday...but still that pain....it is 5/10...which only comes when I bite down.....bite adjusted and all..Percussion test were also taken. They tapped their instrument but no pain...
I cannot open my mouth since 17 days and I am experiencing cracking and clicking noise near temple area and also I feel severe and sudden painin when I try to meet my upper and lower jaw teeth and i constantly feel like my bones are getting displaced
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I am taking medicines like coxo mr and zylone 8 from 5 days and before that flexon mr and joint suggest by dentist i consulted.
2 days ago I went to oral and maxofacial surgeon he told that I need to get all my wisdom teeth out .
I want to are they cause tmj Disorder and discomfort
Please tell.
Actually my mother and father have went to Vellore for their checkup since 20 .days and this is the reason why it's so difficult for me to go to a good doctor I am living with my grandmother. Today they are coming.
I am facing temporal headache (left side ) and neck and traps pains from 2 years years off and on
This opg is 7 days old.
Recently when I chewing food i feel my temporal and eye pains severely for Seconds.
Tooth pains rarely but neck and temporal pains a lot
Is this pain from this impacted tooth
Please guide i feel very depressed all time tried everything for neck(mri neuro physiotherapy)all things give temporary relief only.