Sum 41 frontman Deryck Whibley has opened up about his “scary” hospitalisation following a pneumonia diagnosis.Back in September, the ‘Fat Lip’ singer was admitted to hospital with a pneumonia infection. His wife, Ariana, confirmed his hospitalisation on social media adding that it was on the day the couple were supposed to be in Chicago celebrating their eighth wedding anniversary.She explained that her husband would be kept in hospital for several days due to the risk of heart failure. Whibley had developed a cold after coming off tour with The Offspring, but it spiralled into COVID-19 and then pneumonia.Whibley was previously hospitalised in 2014 for severe liver and kidney damage caused by alcohol abuse.