I am a 26 yr old male and have very similar symptoms. My trauma started with a big surgery followed by a breakup, then another surgery. I took Antibiotics after each surgery, which destroyed my gut. It's been 8 months since last surgery, but I still have not recouped and my hair loss/skin infection (eczema, pityriasis rosea, sd) have not gotten better.
One thing I know for sure is that if you have leaky gut, your body has very difficult time absorbing biotin, a key ingredient for hair/nail growth. Take at least 10mg/day of biotin.
Some people say MSM helps greatly, but every time I tried MSM with vitamin C or just MSM alone, I shed loads of hair. It's been about 2 months since I started probiotics, but have not seen a significant improvement yet.
Improve your gut health by taking coconut oil, organic or homemade sauerkraut, and probiotics supplement. I have only tried 3 brands of probiotics so far and one brand I do not like is Garden of Life. Keep in mind that probiotics work differently for each individual. A brand that works for me may not work for you and vice versa.