
Cops who see Lindsay at her worst -- late nights and early mornings when she needs assistance avoiding the paparazzi -- tell TMZ they have been concerned about her "erratic behavior" and "attitude" -- which have grown progressively worse over the last few months.
We're told during one of Lindsay's crazier nights out recently, cops became so concerned they discussed taking her in for a 5150 evaluation.
Cops decided against it because she didn't meet all the criteria for a 5150 -- they felt she could still take care of herself -- though feebly.
As we first reported, a professional who is extremely close to Lindsay fears she's going to die if she doesn't get help for substance abuse ... stat.
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Tags: 5150, alcohol, cops, death, die, drugs, help, linsday lohan, LinsdayLohan, mental evaluation, MentalEvaluation, police, rehab, substance abuse, SubstanceAbuseComments