Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Emergency symptoms include severe breathlessness at rest, blue or gray coloring, confusion, fainting, or persistent chest pressure.
And for anyone, someone who:
Follow-up should reflect the person’s symptoms, test results, exposure status, and other medical conditions.
A primary care clinician may coordinate care with a pulmonologist, who specializes in lung disease, or an occupational medicine clinician.
Routine visits may review breathing symptoms, work exposure, smoking status, physical activity, inhaler technique, vaccination needs, and oxygen use.
Spirometry, imaging, or exercise oxygen testing may be repeated when clinically appropriate.
Imaging is not always needed at every visit.
The article also says
Current and former miners should keep copies of job histories, workplace exposure records, chest images, breathing tests, and medical reports.
These records can help clinicians recognize changes over time.
Eligible miners may also choose to participate in federal surveillance screening even when they feel well.
Seek earlier medical review if breathing becomes noticeably worse, daily activities become harder, oxygen readings are repeatedly below the range set by a clinician, or a new cough or fever develops.
Every sign above is quoted from the sofidex article on Black lung disease. If you are not sure, err upward — it is always reasonable to be checked.