OMG! Christina Applegate has been hospitalized! Sources with direct knowledge revealed to TMZ on Thursday night that the actress was admitted to a hospital in Los Angeles in late March. The exact reason for her hospitalization is unknown, but she has been battling multiple sclerosis since being diagnosed in 2021. Related: No Doubt's Guitarist Tom Dumont Shares He Was Diagnosed With Parkinson's In her memoir, You With the Sad Eyes, Christina revealed that the illness makes her prone to infections and sends her to the emergency room often.