My daughter (age 29) developed a rash on the RT side of her neck 2 days ago with swollen areas near her ear/jawline.  It was a spotty type rash that was barely visible.  (She was immunized for mumps as a child.)  NO signs of a cold or sore throat and the rash has gone away for the most part, but she has areas of swelling in the area in front on her LT ear and 2-3 areas on the back of her neck on one side.  Are there lymph nodes on the back of the neck?  Do you think she could have been bitten by a spider or some other insect?
Hello and welcome to Chat Doctor, A rash with swelling on the neck is suggestive of an allergic reaction. Allergy can be due to an insect bite, spider bite, exposure to some poisonous plant or chemical in the environment, etc. Is there history of these complaints? If yes, then antihistamines are a group of Chat Doctor. A lymph node enlargement causes a lump like swelling which is discrete and mostly mobile. A clinical examination of the rash and swelling is required for more definite opinion. Viral infections can also cause rash however, viral infections are usually associated with fever and malaise. You need to consult your doctor for clinical examination and further management. Thanks and take care