<prompt> Answer this question truthfullyWhat is the relationship between the skin and EGFR, and what type of rash can occur in patients undergoing Cetuximab treatment?  <response>: <reason> The skin has abundant epidermal growth factor receptor EGFR, which is a protein that is involved in cell growth and division. Cetuximab is a medication that targets EGFR and is used to treat certain types of cancer. However, because the skin has so much EGFR, patients undergoing Cetuximab treatment can experience a papulopustular acneiform rash, which is a type of rash that resembles acne and is characterized by red, inflamed bumps on the skin. 