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The degenerative brain disease is linked to repeated blows to the head and can only be diagnosed definitively after death.

The Times reports that sick and disabled benefit claimants will face more frequent reassessments under the reforms, but that people with "permanent or degenerative conditions" may never have to be reassessed.

Exposure to radiation at these levels has been associated with an elevated risk for heart disease, cancer, and other degenerative disorders that affect the eyes.

Osteoarthritis, a degenerative joint disease that causes pain and stiffness, typically affects older people, but can strike at any age.

Two years ago, Beatrice Cieslik was diagnosed with CLN2 type Batten disease - a rare degenerative condition which causes seizures, blindness, dementia, and difficulty with mobility and speech.