Continued acquisition
Skills continue to emerge. Ongoing support need does not equal regression.
NATURAL HISTORY & STATE TRANSITIONS
Define usual function, record the context around a change, and distinguish continued acquisition, variable access, events, and acquired loss.
TRACK THE SAME OUTCOME OVER TIME
Define baseline, the active context, the exact change, measurement, action, and recovery before reconstructing the timeline later.
WHAT TO RECORD AROUND A CHANGE
Past records and observations can identify a possible change window. A prospective study should repeat the same measure across baseline, change, and recovery whenever clinically appropriate.
Usual function, active diagnoses, supports, and recent stability before the change.
Illness, sleep, pain, bowel state, meals, fasting or low intake, hormones, medication, procedure, environment, or no clear context identified.
What became newly present, newly absent, less reliable, or measurably different from the person’s own baseline.
The examination, record, EEG, laboratory, imaging, school, therapy, or functional measure capable of answering the question.
Treatment, support, exposure removal, rehabilitation, watchful follow-up, or no intervention recorded.
Complete, partial, delayed, recurrent, unresolved, persistent, or a new baseline.
Timing supports a hypothesis; it does not by itself establish the trigger, mechanism, efficacy, or adverse effect.
WAYS A COURSE CAN CHANGE
These are possible patterns over time. They do not estimate how often a pattern occurs or show that every course shares one ASH1L cause.
Skills continue to emerge. Ongoing support need does not equal regression.
Progress slows or pauses without documented loss of a previously demonstrated ability.
A demonstrated ability becomes inconsistent across state or setting, then may return.
A discrete event has a recognizable onset and offset and requires event-level differential assessment.
A previously demonstrated ability is no longer available beyond the immediate state window.
Recovery is incomplete or a different stable level of function remains after the event.
ABILITY × ACCESS
Before calling a change regression, document whether the ability reappears with cueing, rest, pain relief, seizure control, bowel relief, communication support, a familiar context, or resolution of another physiological stressor or condition. Reappearance does not make the event unimportant; it changes the question being asked.
Ability × access × state →