Scalp burning and itchy in humidity. Do?

Hello Dr, i have been facing this problem since last 8 years when u shifted to noida. Every year during humid weather my scalp gets itchy and something sticky and smelly starts coming out of my scalp skin and my hair gets stuck together. It feels like my scalp is burning. Then it heals when the weather improves but ut creates a layer of flakes on scalp and then i keep on removing the flakes. It happens every week. If i wash my hair daily. Then hair gets so rough and difficult to manage. I wash 3 times in a week in summer. I have tried homeopathic medicine, ayurvedic treatment and also allopathic medicine for this. But ut has not cured. Allopathy dr gave me itraconazole tablets and coaltar and ketoconazole2% shampoo. I regulrly use ketoconazole 2% shampoo but now it doesn't cure my problem. I dont even know what the problem is?? Ayurvedic dr said it is psoriasis he treated it but no result. Allopathic dr said it is sebbhoric dermatitis but also not cured permanently. what to do