Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Contact a healthcare professional sooner if irritation is severe, painful lesions are increasing, scars are forming, or acne is having a major emotional effect.
People taking prescription medicines should follow the monitoring plan provided by their clinician.
Urgent assessment is needed for rapidly worsening painful acne with fever or illness, serious medicine reactions, severe headache with vision changes, or major changes in mental health.
Routine follow-up allows a clinician to check progress, side effects, and whether the treatment is practical to continue.
Many treatment plans are reviewed after about 8 to 12 weeks because acne improves gradually.
Stopping too early can make an effective treatment seem unsuccessful.
Routine care is appropriate for ongoing breakouts, treatment adjustments, dark marks, and scar concerns.
The article also says
Once acne improves, a maintenance treatment may help prevent new blocked pores.
Maintenance often relies on a non-antibiotic topical treatment rather than continued antibiotic use.
The most suitable option depends on skin sensitivity, pregnancy considerations, and the pattern of previous acne.
Every sign above is quoted from the sofidex article on Acne. If you are not sure, err upward — it is always reasonable to be checked.