When people think of sensitivity, they often think of emotional sensitivity. Sensitivity however can also refer to having "allergic like" reactions to foods, chemicals, fragrance, pollution, and for some people with certain health conditions (e.g. Vestibular, Vasomotor, fibromyalgia, migraines, CFS - NIDS) it can also refer to sensitivity to sensory stimuli - e.g. noise, light, touch, other.
Sensitivities can result in negative reactions and unpleasant symtoms when exposed to sensitivity triggers. The volume on sensitivities can often be turned down a lot, with good sleep, anxiety management, healthy living and proper medical treatments for conditions you may have. Reducing exposures to triggers (rather than avoiding) can provide sensitivity and symptom relief.