Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services for severe difficulty breathing, fainting, blue or grey lips, crushing or sudden severe chest pain, or chest symptoms after a major injury.
Get prompt medical advice if you develop ongoing breathlessness, faintness during exercise, repeated palpitations, or a clear decline in stamina.
These symptoms may need evaluation for causes unrelated to pectus carinatum.
These are not expected features of uncomplicated pectus carinatum and need urgent assessment.
Arrange a routine appointment if you notice a new or increasing outward chest projection, especially during a growth spurt.
Assessment is also appropriate if the shape causes pain, exercise difficulty, sleep problems, skin pressure, or distress about appearance.
Seek routine follow-up during bracing if the brace no longer fits, leaves persistent marks, causes worsening pain, or seems less effective as you grow.
Do not try to increase brace pressure on your own unless the brace team has shown you how.
Every sign above is quoted from the sofidex article on Pectus carinatum. If you are not sure, err upward — it is always reasonable to be checked.