Article continues below advertisementJustin Bieber's mom, Pattie Mallette, gave further insight into the singer's rumored mental health battle.On Monday, September 22, the matriarch shared an emotional photo dump of her son in a "Pray for Me" T-shirt, wishing him "healing."Mallette's cryptic Instagram post comes amid gossip about Bieber possibly suffering from drug addiction.Article continues below advertisementSource: @justinbieber/InstagramJustin Bieber is reportedly struggling with his mental health."We're cheering you on and praying for you always Justin.