Here are a few serious conditions that may be causing the spots: You may be able to tell the spots on your skin are petechiae instead of a rash if you press on them, and they don’t turn lighter ...
Petechiae are flat spots that may appear as ... swollen lymph nodes, swollen tonsils, a skin rash, and a sore throat. Some patients with mononucleosis may also have a swollen spleen.