I have a rash over over 95 percent of my body.  Two Dematologist have said Granuloma Annulare.  I agree with that for the rash on my torso and legs and feet.  The rash on my arms is different and covers almost all my arms.  They look like where you get a TB test.  There are 5 raised dots and a center.
Hi, There are many possible differential diagnoses for the rash that you have explained. The most common diagnosis that should be ruled out is Tina corporal which may require a skin scraping for KOH mount. To rule out other diagnosis and to confirm the diagnosis of granuloma annular, you may require a skin biopsy for histopathological examination. So, I request you to kindly visit your Dermatologist for further diagnosis and management. Hope I have answered your query. Let me know if I can assist you further.