Demi Moore was hospitalized late Monday.
The issue is reportedly substance abuse. Law enforcement sources say a 911 call was placed at 10:45 p.m. Monday night, with paramedics responding to Demi's L.A. home.
After being assessed for a half hour, Demi Moore was transported to a local hospital. The 49-year-old is being placed in a facility to "seek further professional assistance."
It's unclear what substance(s) the alleged abuse, reported by TMZ, involved.
Despite the substance abuse claims, Demi's rep says of his client: "Because of the stresses in her life right now, Demi has chosen to seek professional assistance to treat her exhaustion and improve her overall health.
"She looks forward to getting well and is grateful for the support of family and friends."
According to E! News, a female friend was at Moore's home when the actress started "shaking" and otherwise "acting like she was suffering from a seizure."
Sources who saw Moore as recently as last week say the actress has been looking increasingly thin, and friends have grown concerned about her weight.
Demi split from her husband Ashton Kutcher in November. The Two and a Half Men star is currently in Brazil for a shoot with Brazilian fashion brand Colcci.
Moore's rep confirmed that the star has dropped out of the Linda Lovelace biopic Lovelace, in which she had been cast as feminist icon Gloria Steinem.
We wish her only the best in her recovery.