Sir i used to have frequent giddiness for the past 6 years. i have consulted many doctors.som say its vertigo and som say its due to low bp.

Could be both or...: neither. "Giddy" must be classified into one of 3 sensations: 1. A sensation of you or the world moving (vertigo) 2. A sensation that you are going to lose consciousness (pre syncope / syncope). 3. Anything else. Most of the time this classification can be made by taking a very careful history. Perhaps you know which you are.