What falls under the same umbrella
Breathing-related sleep problems can include obstructive apnea, central apnea, mixed or complex patterns, UARS, and cases where the study looks mild but the symptoms are not mild at all.
Why “normal” testing does not always end the conversation
A study can miss the real question if the wrong tool was chosen, the phenotype is subtle, or the patient’s symptom burden reflects more than a simple AHI value. That does not mean the person is imagining the problem.
Why persistent symptoms matter
If a patient is on treatment and still feels terrible, the job is not done. Residual sleepiness, pressure intolerance, central patterns, mask problems, and mismatch between report and lived experience all deserve attention.