I’ve Experienced Severe Diffuse Thinning in Just 4 Months

I am a 22 year old who has experience fairly severe diffuse thinning over a period of just four months. I first noticed the problem in March eventually going to see my doctor in April. He said he could see nothing wrong with my hair but noted that I have two patches of Alopecia Areata and some form of dermatitis on my scalp. My hair continued to thin and in June visited a dermatologist who was similarly distracted by the patches of alopecia and inflamed scalp and also said he could see no sign of MPB. However I feel my hair has continued to thin rapidly since then so I have booked another dermatologists appointment for two weeks on Wednesday but fear I will have little hair left by then.

Is four months considered rapid progression?
I have had an extremely stressful year so far but feel I can rule out T.E because I read you can not have A.A in conjunction with it.
My diet is admittedly poor but a blood test in April turned out to be fine.

Do you have any thoughts?

Thanks

I am assuming that you are a male. Men with genetic hair loss do, at times, develop alopecia areata. There is no connection between the two. With that said, if your hair thinning is diffuse and reflective of some other form of hair loss like diffuse telogen effluvium or diffuse unpatterned alopecia, you should have your scalp mapped out for miniaturization to find out if you have an early subtle patterned genetic hair loss. A hair pull test would also have value for you. Has your doctor done both of these things? Have you had blood tests for endocrine abnormalities such a thyroid disease? The stress you are having can accelerate genetic hair loss or diffuse unpatterned alopecia. If you get the idea, you need a doctor to make the differential diagnosis here.