Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain recurrent canker sores along with
swollen lymph nodes in my neck and
severe fatigue, low grade temp and also having a history of
Herpes simplex virus infection for which you have taken 3 rounds of
antiviral medications seems to be most probably due to viral infection only..
Infection is causing the symptoms of fever and lymph node enlargement along with sores in mouth..
I would suggest you to consult an Infectious medicine specialist and get evaluated and a thorough clinical evaluation and investigations like CBC, Viral culture, oral swab culture etc can help in diagnosis and treated accordingly
As of now you van take
tylenol to reduce temperature..
Do warm saline gargles..
Gargle with numbing mouthwash containing Lignocaine can help..
Avoid hard and spicy food.
Suck ice..
Do cool compresses over the lymph nodes..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.