Our expert says:
If you'll check the archives of this forum I've responded to similar questions several times recently. At this age this is rather uncommon, as we see it more in younger children --- but i'd be wise to take him to see a good local child psychiatrist or child psychologist for a proper in-depth assessment of what might be going on, Various forms of stress, at home or at school can be related to such loss of control. You say he is STILL pooping in his pants, which suggests that he has never been fully continent, rather than that he has recently stated soiling himself having not done so for some years.
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