The common trait found in all autoimmune diseases is internal inflammation which means anti-inflammatory foods are key:
And then focusing on nutrients for hair growth. Some important nutrients include antioxidants, protein and healthy fats like omega-3s, vitamin E, biotin. Try adding walnuts, berries, cooked sweet potato, tomato, pumpkin seeds, sunflower seeds, avocado, lemons, lentils or other beans, Brazil nut for selenium, antioxidant-rich berries, cabbage, cucumber, red pepper, and celery. Check out this blog for more beautifying foods: https://www.nutriliving.com/blog/5-tips-becoming-beautylicious
Also...our friends over at Food Mattes provides some suggestions.
Since this type of hair loss is noted as an autoimmune condition, then boosting the immune system may provide some benefits. Focus on healthy gut bacteria by consuming probiotic-rich foods such as kimchi, miso, kefir, and sauerkraut. Plus focus on immune-boosting whole foods: