I had this red itchy dry patch appear on the left side of my neck 2 weeks ago. Can anyone help me out to identify this? (photo)

I've look online about that possibilities of it being a rash, bug bite, eczema, Lyme disease, etc. the closes it identifies itself with is a possible tick/bed bug bite or Lyme disease. I only have this 1 spot on my neck and the rest of my body is fine. I'm 32 years old and never seen this before. It does not itch to the point where its very aggressive but I can feel the itch if i make any head movement. I thought it might fade already but now I have concerns and will visit the doctor. Thank you.

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