Genetic hair loss does not cause eyebrow loss so it's clear there is another cause. However, based on your story and photos you likely have genetic hair loss and telogen effluviumSee a dermatologist to confirm.
Loss of hair is a natural process when it is between the limits that the body can restore them. When the capacity of the body to restore the hair loss is beaten by the excessive hair loss then we can name this situation something that should be treated
this is likely a combination of stress induced and hormonal loss that requires a series of treatment options. I suggest you see an expert. Best, Dr. Emer.
there are many causes for hair loss but the most common is genetic male pattern hair loss. You do show some thinning that may be related to genetic hair loss although stresss and some autoimmune diseases may instigate hair loss. At this young age and your history, it is too early to tell. At this point, you can contact a hair loss specialist to be evaluated and under their supervision start on a hair regiment routine to slow down the progression.
Male genetic hair loss can be started with drugs or stress or infection. Your biggest enemy is the progressive thinning leading to a balding pattern that is not evident at this point in time. The degree of thinning that you are experiencing would suggest that you should see a doctor who most likely will get Bulk Measurements with the HAIRCHECK instrument which is very effective of predicting hair loss based upon early loss of your hair. It will determine the degree of your hair to determine the degree of the thinning that you are presently having. If the diagnosis is early genetic hair loss (the most common cause of hair loss in young men), then the best treatment would be the drug finasteride which is highly effective in men of your age and may not only stop the hair loss but possibly reverse it. If you are developing a more advanced balding pattern the best test to get will determine the Bulk Measurements of your hair and this will show, over a one-year time frame, how effective the treatment will be. Once you know this information, then you and your doctor need to develop a MASTER PLAN which will define what you need to do over the years to come.