What are the signs of a male yeast infection? can yeast infection and tinea versicolor be caused together?

Not sure what you mean by "male yeast infection"? If you mean a rash on the penis and scrotum, that can be a yeast (fungal infection). Tinea versicolor is also a type of skin fungal infection, but not necessarily the same as what would occur on genitals. Please have a visit with your doctor to examine the rash and be properly diagnosed and treated.