is scaly epidermis
that clogs the hair, some persons tend to form more scale while other less but every body has it, It becomes particularly visible and a cosmetic issue when there is fungal infection
associated which makes it messy and more itchy and if still uncared then supra-added bacterial infections come and result in boils and boggy painful swelling in scalp- As is your case.
The first thing I would advise is get your Diabetes
status checked-get fasting blood sugar levels and HbA1c levels.
You have asked about home remedy- answer is yes it is- Improve your personal hygiene, have bath at least one times a day. Improve the Protein quantity and quality in your food and cut down on refined sugars and fast foods, Increase MUFA & PUFA in food fat content and yes include exercise in your schedule.
In medical management a diaspora of choices but I would like to go strait forward to avoid much confusion. Choose a shampoo that contains Selenium sulfide
Start using with lukewarm water, Just use like any shampoo but keep it in the hair for 5-10minutes
Apply daily for one week then Alternate day the next week and then twice a week to continue. On other days you can use shampoos of your choice.
I do not advise systemic antifungals for dandruff but if you still have scalp boils then take the following-
625mg 8hourly for 5 days
Cream Fusidin/Fusiwal to be applied locally for 5 days BD.
I am pretty sure that if you stick to mentionedadvise you will get cured.