Germany international Jamal Musiala has collapsed during a match for the second time in four days. He was helped off the pitch looking dazed just six minutes after coming on as a subsititute in Bayern Munich's 4-2 friendly win at Heidenheim on Tuesday. Musiala collapsed in similar fashion in a match against RB Leipzig a few days earlier.

After the Heidenheim game, Musiala explained in an Instagram post that the blackouts were caused by a "neurological dysfunction" known as "absence seizures."

"I've been diagnosed with temporary, brief, but easily treatable absence seizures, which are due to a neurological dysfunction," he wrote in the post, which drew support from many in the football world, including Bayern keeper Manuel Neuer and former Germany and Bayern forward Thomas Müller.

"These can lead to the recent episodes, like the one against Leipzig or now in Heidenheim. I know they seem scary at first glance but for me, they're currently just part of my everyday life.

"I'm receiving excellent medical treatment and am very optimistic. FC Bayern and my family and friends are always by my side and supporting me on this journey."