There is any special condition?
Yes, there are. You can add new and relevant information to your file, you can ask for a new look from a senior reviewer for a higher level review, also you can appeal to a veterans law judge for a board appeal.
Alright, that's good to know. But can you tell me more about the board appeal please?
Of course. You can request a board appeal after an initial claim, a supplemental claim or higher level review decision.