Damages incurred from medical expenses that they did not anticipate from permanent brain damage.

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But this change appears to be reversible, and not to lead to permanent brain damage.

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The current final protocol provides the top priority of payment to the families of - the four families who lost loved ones and those who were double amputees or suffered permanent brain damage.

NPR: Managing The $30 Million 'One Fund' To Aid Boston Victims

The suit alleges the league didn't do enough to warn players that they risked permanent brain damage if they played too soon after a concussion and that it hid evidence about the risks for decades.

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Also, the administrator of the One Fund Boston released the protocol for payouts of the fund, with the families of those who lost loved ones and individuals who suffered double amputations or permanent brain damage in the bombings receiving the highest payments.

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Kenneth Feinberg spoke Monday evening at a Town Hall meeting at the Boston Public Library, near the blast site, and said the families of those who lost loved ones and individuals who suffered double amputations or permanent brain damage would receive the highest category of payment.

NPR: Mass. Funeral Director Considers Burial Offers

But, afterward, all that might be permanent is brain damage.

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"We cannot emphasise enough that measles is an illness that can kill, or leave patients with permanent complications including severe brain damage, and the only protection is two doses of the MMR vaccination, " she added.

BBC: Boy with measles

Mercury exposure can cause permanent damage to the brain, kidneys and lungs but about 180 families live there.

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But if the affected person has suffered severe brain damage, he or she may sustain permanent disabilities or may never regain consciousness.

CNN: Coma

Officials have said it is "just a matter of time" before a child is left with serious and permanent complications, such as eye disorders, deafness or brain damage, or even dies.

BBC: Wales

It added that it was "just a matter of time" before a child was left with serious and permanent complications, such as eye disorders, deafness or brain damage, or even dies.

BBC: Measles: Over 500 cases in Swansea epidemic