I heard many people with this complaint, and no clear answer what is the cause, and I have no definite answer either, and believe most likely It is from canker sores, fever blisters, water blister, caused by the the herpes simplex virus, HSV-1, which can be reactivated by illness, poor nutrition, radiation, chemo, etc. Another I heard was from acidic foods, so staying away from them may help, and then heard the usual, it's part of the healing process, but I want to know why.

This is going to bother me until I find out lol. My RO visit is not until August frown

10/09 T1N2bM0 Tonsil
11/09 Taxo Cisp 5-FU, 6 Months Hosp
01/11 35 IMRT 70Gy 7 Wks
06/11 30 HBO
08/11 RND PNI
06/12 SND PNI LVI
08/12 RND Pec Flap IORT 12 Gy
10/12 25 IMRT 50Gy 6 Wks Taxo Erbitux
10/13 SND
10/13 TBO/Angiograph
10/13 RND Carotid Remove IORT 10Gy PNI
12/13 25 Protons 50Gy 6 Wks Carbo
11/14 All Teeth Extract 30 HBO
03/15 Sequestromy Buccal Flap ORN
09/16 Mandibulectomy Fib Flap Sternotomy
04/17 Regraft hypergranulation Donor Site
06/17 Heart Attack Stent
02/19 Finally Cancer Free Took 10 yrs