Hair loss can also be due to dandruff, dermatitis, shampoos, oils, soaps, dust and
dirt etc. Thyroid disorders and
diabetes too could be a cause. Insomnia, stress and
anxiety along with poor diet and excess of caffeine too can be the cause. Since you also have itch possibility of fungal infection, dermatitis, stress and anxiety along with thyroid disorders are maximum. I think you should discuss these possibilities with your doctor. Hope this helps. Take care!