I noticed your posting on medindia.net.
My boyfriend suffered from severe itchy flaky scalp. for over 3 years so I guess I know now what he is going through. All the doctors said the condition was caused by Seborrheic Dermatitis.

After using all kinds of shampoos including Nizoral and other lotions he was ready to give up. Luckily I came across a website called "http://www.refreshedskin.com/"and www.refreshedskin.com , this site seems to be created by people who suffered from SD and Eczema. On the site I downloaded a clearance program for SD and got my boyfriend to use it. In the first 2 days his itchy scalp and dandruff had gone and he is never had an itchy or dandruff covered scalp again. So if it worked for him, I think you should try it!