Former ‘Crazy Town’ singer and former “Celebrity Rehab” star – Shifty Shellshock is in a coma in an L.A. hospital.

No one knows exactly what caused the coma but it is believed to be drug-related.

Shifty was scheduled to appear in court this week for a pre-trial hearing after his February cocaine arrest. He was said to be very anxious. This may possibly be a planned overdose.

Story developing…

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