Am I going bald at 18? (Photos)

Yes, it would appear there is hair loss. Be sure to see a knowledgable physician for an in person examination of the scalp 

If you are noticing a pattern like your parents or grandparents, then you may have hereditary hair loss. I would recommend you seek consultation from a hair specialist for the answer. Most likely, this is androgenetic alopecia which causes about 95% of hair loss. If so, there are many medical options for you to consider to help slow down the hair loss.

To find out if you are balding, you should find a doctor who has a HAIRCHECK instrument which can accurately tell if you are balding and how much hair you lost when you eye can't see it, see below