I'm sweating a lot for no reason. Is this normal?

My pillow has yellow stains from how much I've been sweating each night. This doesn't seem normal to me. If I go see a doctor, how would he/she know if indeed have reasons to be worried? What's considered normal in terms of sweating?

GlyphT

M, 30, Oregon

Tags:man age 25-34 excessive sweating sweat