The disability is the invalid condition . In the case of Humans , who suffers from a qualification is considered invalid mental or physical defect that hinders or prevents the development of certain actions or activities.

In this way, disability implies a state of disability, which can be partial or total and provisional or permanent . The formal or legal definition of disability varies according to each country and it is very important to determine the functioning of the pension system, insurance, etc.
In some nations, people who have an intellectual or physical disability greater than a certain percentage may request a disability withdrawal . It is a benefit provided by the State , granting an amount of money to the subject so that he can cover his needs, taking into account that he is not in a position to work to generate his own income.
It is known as great disability to the situation of someone who suffers a permanent work disability and requires the continued support of another person to develop the basic actions of everyday life.
Typically, a medical board is responsible for analyzing each particular case to determine, according to objective criteria, the subject's disability. There are cases in which a man It seeks to be declared invalid to receive the corresponding pension and thus not have to work, when in fact it does have the physical and mental capacities necessary to fulfill labor obligations. If the medical board considers that the disability should not be declared, the pension is rejected.