Original sentence: Factors that tend to diminish symptoms are comforting interpersonal interactions, intense physical or emotional stimulation, and relaxation.Some of the more common factors that exacerbate dissociative symptoms are negative affects, stress, subjective threatening social interaction, and unfamiliar environments.The average age of onset during the teenage years or early 20s, although some report being depersonalized as long as they can remember, and others report a later onset
Edited sentence: The average age of onset is 16 years of age, although some report being depersonalized as long as they can remember, and others report an onset in their 20s, 30s, or even 40s