Thank you for asking on HCM.
It can be an abscess
which due to the inflammation is giving pain and tenderness in the neck, shoulder, face , jaw and back of neck.
Another possibility is that there is an infection going on in the head and neck region, resulting in enlarged and painful lymph
node and pain is due to the inflammatory effects of the lump. The muscular tension may be present as a secondary feature. If I was your treating physician I will consider:
1. Starting an antibiotic course ( preferably Tab Augmentin
) and Tab Diclofenac
as a pain killer. (As dosing
is required please consult your doctor)
2. Evaluate the lump by physical examination and relevant investigations if necessary.
I hope you find this helpful.