Waking up mid-flare and needing to write a sick message before your stomach has settled is a rough combination. Your brain wants to justify every detail so nobody doubts you. Your body just wants you to put the phone down and lie back down. A short, calm message gets you the day off just as well as a long one, without handing your medical history to a group chat. If the flare is happening at your desk rather than at home, managing a gut flare-up at work covers the version of this problem that starts after you've already clocked in.
What your message needs to cover
Your manager needs to know you're out and roughly how long. If anything urgent needs someone else's eyes on it today, flag that too. Symptoms, bathroom details, and how long you've dealt with this condition can stay private.
A script you can copy
For email or a longer message: "I'm not feeling well and need to take today as a sick day. I'll check email periodically, but please loop in [colleague] if anything urgent comes up on the Morrison account. Expecting to be back tomorrow, will update if that changes."
For a chat tool, two lines do the same job: "Out sick today, should be back tomorrow. [Colleague] can cover anything urgent."
Oversharing vs. just enough
Oversharing
"Sorry, my stomach has been awful since 4am, I think it's my Crohn's flaring up again, I've been in and out of the bathroom all morning and I don't think I can make it in, I'm so sorry, I'll try to check email if I feel up to it."Just enough
"Not feeling well, taking today as a sick day. [Colleague] can cover anything urgent. Back tomorrow."Both messages get you the day off. Only one hands over information nobody at work needed, and puts you in the position of explaining a chronic illness before 9am.
If someone asks follow-up questions
Most managers won't ask anything further, but occasionally someone does, usually out of concern rather than suspicion. A short, general answer closes the topic: "Just not feeling well, should be fine by tomorrow." One sentence is almost always enough. If you have a diagnosed condition and this keeps happening in a way that worries you, raise it with your manager on a calm day, separate from any single sick message, using the same approach covered in telling a new boss about your gut condition.
When it runs past one day
Flares don't always clear up overnight. A second or third day out calls for a short update, not a longer explanation: "Still not up to it today, hoping to be back tomorrow. Will keep you posted." If an absence stretches past several days, some workplaces ask for a doctor's note as part of their standard leave policy, so check yours ahead of time rather than finding out mid-flare. If the physical symptoms are hard to tell apart from anxiety in the moment, panic attack or gut flare walks through how to tell the difference before you even get to writing the message.
Coming back
You don't owe anyone a recap when you return. A brief, upbeat line covers it: "Feeling better, thanks for covering yesterday, catching up now." A sick day tends to fade from people's memory quickly, and the colleagues who remember are usually the ones you've covered for on their own days out.
