Should I be concerned about my symptoms?

Patient: I just died my hair on the 17th and besides the itchy scalp have noticed my lymph nodes on my neck to be swollen (you can visually see, do not hurt but tender). My ears and hair line also have a red rash, is this an allergic reaction I should be considered about?

Symptoms: Itchy scalp and ears, rash on ears, lymph nodes swollen on right side of neck and behind left ear