The ex-Liverpool forward said he is battling a crippling bout of depression that has left him lying in bed 20 hours a day.
He wrote on Twitter: “Last three weeks I’ve been in bed sleeping 20 hours a day, stinking to high heaven, unable to wash.
“Second worst bout of D of my life filled with a longing to never wake.
“Today I’m going to the gym. To fight back.
“If you’re struggling, you’re not alone, and it will pass. Stay in the game.”
“Oh Stan I’m so sorry to hear this. Hope the gym helps”
Concerned pals rushed to wish the pundit – who has a history of the mental illness – a speedy recovery.
Ex-footballer Kevin Campbell commented: “Stay strong Stan Collymore I’m glad you’re focused on getting better.”
Sports presenter Alison Bender wrote: “Oh Stan I’m so sorry to hear this. Hope the gym helps.”
And Match of the Day presenter Gary Lineker, added: “Good luck fella.”
But fans were also wishing the former Aston Villa talisman well.
One said: “Been off work for 11 weeks, gradually working through the fog and dark thoughts, returning on Monday, looking forward not back. We’ve got this Stan.”
And another added: “Sorry you’re going through this again Stan but what you’re doing, talking about it publicly and starting a dialogue with your followers is so important.
“Particularly for your male followers who would otherwise find it so difficult to discuss those feelings.”