Sergio Aguero played a majority of the first half in Barcelona’s 1-1 draw with Alaves on Saturday but appeared to signal to the bench before going down clutching his chest just before half-time.
The 33-year-old received treatment for several minutes before being helped off the pitch and was taken to hospital.
What was wrong with Sergio Aguero?
Sergio Aguero had been struggling with chest pain towards the end of the first half and Barcelona’s caretaker coach Sergi Barjuan said: “"I was told he was feeling a bit dizzy. I have just learnt that he was taken to hospital and I can't say much more until I know.”
The striker had been having breathing problems and was later taken to hospital to have his heart checked.
Aguero has been diagnosed with cardiac arrhythmia after tests were conducted and remained in hospital for further testing.
It was confirmed yesterday (November 1) by FC Barcelona that the striker won’t play for three months following the incident and will receive treatment while his health is monitored.
Aguero has since said he is “well and in good spirits to face the recovery process” on social media.
What is cardiac arrhythmia?
Cardiac arrhythmia is a heart rhythm frequency disorder which is something that he suffered with at the start of his career.
This condition can cause the heart to beat too slowly, too quickly or irregularly and symptoms can include palpitations, feeling dizzy, fainting and being short of breath.
These abnormalities range from a minor inconvenience or discomfort to a potentially fatal problem.
Aguero will remain in hospital for further tests to find out the severity of the condition.