<s>[INST] i have a pea size lump in the left side of my neck and red burning rash about 2 cm down on my chest. the area around the lump burns or stings. i ve never had a rash so i m not sure what this sensation is. i ve been sick with a sore throat for a week now and havent been to the dr. because i thought it d go away. i just felt the lump yesterday. [/INST] Hi, dear. I have gone through your question. I can understand your concern.  You may have some reactive lymph node due to sore throat.  You should take a course of antibiotics like azithromycin according to your doctors' advice.  If lump doesn't respond to treatment then biopsy diagnosis is advisable.  Consult your doctor and take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>