How can i distinguish between a yeast infection and syphilis?

Yeast vs syphilis: Symptoms of a yeast infection may include: burning, redness & itching of the vulva; burning with urination & vaginal intercourse & a clumpy, white, vaginal discharge with no odor. Sometimes the discharge isn’t apparent. Syphilis can present with chancre (sore) in location that germs entered body. There may be swollen lymph nodes. Second phase – rash on palms/soles/body red/brown flat or raised