Name 3 differential diagnoses based on this patient presenting symptoms?

Neck/Throat no neck swelling or tenderness with palpation; neck is supple; no JVD; thyroid is not enlarged; trachea midline mild edema with inflammation located on forearms, upper arms, and chest wall, thighs and knees; primary lesions are a macular papular rash with secondary linear excoriations on forearms and legs Once you received your case number, answer the following questions: What other subjective data would you obtain? What other objective findings would you look for? What diagnostic exams do you want to order? Name 3 differential diagnoses based on this patient presenting symptoms?