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Is the tender small nodule about 4-5mm below the lid margin?
It is likely that the nodule is an acute internal hordeolum.
It is a kind of infection of the meibomian gland(modified sebaceous gland in the lid).
Very small nodules subside with warm compresses alone by 7-10 days.
But if it persists or is a bit large then oral antibiotics are needed.
How long should I treat the nodule before needing to go to a doctor
Another week of warm compresses, twice a day.
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