More tingling, electrical sensations or pain does not prove that nerves are regenerating. Interpreting every uncomfortable change as healing risks assigning a reassuring explanation before the symptom has been assessed.
A symptom has more than one possible meaning
The NINDS peripheral-neuropathy overview describes a wide range of sensory, motor and autonomic symptoms and the clinical evaluations used to investigate them. The same subjective word can occur in different contexts; it is not a direct measurement of repair.
A person may accurately describe a new sensation while its mechanism remains unknown. Respecting the report does not require endorsing an explanation from a comment thread.
Regeneration needs an appropriate measurement
To establish a repair claim, researchers need an assessment designed for that purpose and a comparison that helps distinguish treatment effects from other changes. A symptom diary and a nerve-fiber measurement answer different questions. Neither should be relabeled as the other.
Even if an experiment links a biomarker with an outcome, that does not establish that every flare in an individual is a favorable sign. The connection would need to be validated for the specific symptom, condition and intervention.
Why the timeline is not enough
A symptom that appears after an exposure may be related to it, related to another change or part of the underlying illness. Timing is useful information, but it does not identify which explanation is correct.
The same problem applies when several interventions begin together. A new sensation cannot reveal which component, if any, caused it. Confidently calling it regeneration would skip both the attribution question and the safety assessment.
This article does not recommend persisting through a flare or repeating an exposure to test the theory. New, worsening or concerning neurological symptoms should be evaluated by a qualified clinician. The important distinction is between noticing a change and knowing what the change means. ARA-290 research does not make pain itself a reliable home test of nerve repair.