What this video covers
The clip lists the symptom cluster that people most often attribute to something else.
Chronic congestion that never fully clears, fatigue that sleep does not fix, brain fog, headaches and skin rashes. Individually each has many causes, which is why the group is more informative than any single item.
The takeaway
The pattern worth noticing is location, not symptom. If several of these ease when you spend time away from the building and return when you do, that points at the environment rather than at you.
Read the full written guide: Can Mold Make You Sick?.