Is this diffuse thinning? 24 year old male (Photo)

A few photos of how you look cannot diagnose your hair loss condition. Plus there is no BEFORE photos for comparison.

Based on the photos, it appears you do have a form of diffuse male pattern hair loss.  It is difficult to tell whether it is diffuse patterned alopecia (DPA) or diffuse unpatterned alopecia (DUPA). The latter type is much more rare and far less likely. It is impossible to predict where you will progress in terms of the Hamilton Norwood scale. We do know that men with hair loss in their 20s are more likely to develop more significant degrees of hair loss and we also know that men with strong family histories are also at greater risk 

There are many different causes for hair loss. You need to see your hair restoration specialist to make a diagnosis for the cause of your hair loss. once the diagnosis is established then your doctor can give recommendation as for the treatment option that best suits your need.  If you hair loss is genetic, under the supervision of a hair loss specialist, you can start on a medical regiment to slow down your hair loss such as minoxidil, propecia, PRP, laser, vitamins and shampoos.   You need to stay on the regiment to see any result.  If however, your hair loss continues you may want to consider hair transplant to regain your lost hair.

Assuming you have not had significant shedding in the past 2 months or so (that is bundles of hair on your comb, pillow and brush) and that this has been gradual, it certainly appears to be male pattern baldness.  If I were to guess, I think you will progress to a Type VI or VII Norwood pattern.  Minoxidil, Propecia, and PRP may be helpful in holding onto your hair for a longer time.  In the meantime, you could use Toppik or something similar to create the appearance of density.  You should see a Dermatologist for a complete assessment, to rule out other reasons for the hair loss, however.