Astronaut Scott Kelly held the record for the most consecutive days spent aboard the International Space Station, but it was an achievement that came with a high cost.

He now suffers numerous health problems after his 340-day mission. Kelly’s health problems will plague him for the rest of his life. He even shares his problems in his book titled Endurance.

Here are all the things that happened to the astronaut.

A Burning Rash All Over His Skin

Kelly discovered a strange rash:

‘My skin is burning, too,’ I tell her. Amiko frantically examines me. I have a strange rash all over my back, the backs of my legs, the back of my head and neck – everywhere I was in contact with the bed.

I can feel her cool hands moving over my inflamed skin. ‘It looks like an allergic rash,’ she says. ‘Like hives.’