Hi, I am quite empathetic to the burning rashes on neck and eyes which spreads. I have gone through your query with diligence and after reading your history it appears that you might have developed allergic contact dermatitis to some contact allergen. You recollect anything new coming in your contact before appearance of the rash. If itching is present then can take benadryl accordingly. Apply a plenty of moisturizers over the affected area. I advise you to not pinch or pop the area otherwise these areas are very prone for getting secondary infection. You can apply an steroid cream such as cortisone cream. You can go for patch test which tells us about skin allergy to any contact allergen. You should preferably meet a dermatologist who can examine you physically and provide you the best diagnosis and treatment. Take care.