Head neck squamous cell carcinoma is a life threatening disease if not treated. If you found any lump or ulcer or any abnormal thing in your neck or jaw or in your head and neck are and is not healing in 2 weeks. Than please consult an oncologist for further investigation .he than suggest you a biopsy or fnac.this confirms you is this cancer or not. If reports confirms that this is cancer than further treatment gives you surgery radiation and chemotherapy.