Which condition is not a contraindication for AHA treatments?

Fibromyalgia is a chronic pain condition that primarily affects the muscles and soft tissues, but it does not directly impact the skin's ability to tolerate AHA (alpha hydroxy acid) treatments. AHA treatments are generally applied to exfoliate the skin and improve conditions such as hyperpigmentation, uneven texture, and signs of aging. There is no direct interaction between AHA treatments and fibromyalgia, making this condition not a contraindication.

In contrast, active acne, sunburns, and eczema represent specific conditions of the skin that can exacerbate irritation or inflammation when subjected to AHA treatments. Active acne could worsen with exfoliation, sunburns indicate damaged skin barriers that need healing, and eczema signifies hypersensitivity, which could lead to further irritation. Therefore, while fibromyalgia itself does not contraindicate AHA treatments, the other conditions do.