If you follow the symbol to the fine print you learn that they define this as [items in brackets are added by me and not part of the original research text] allodynia [extreme sensitivity to touch], burning sensation, dysaesthesia [disruption to sense of touch unusual, unpleasant or painful sensations], hyperaesthesia [sensations felt very intensely], pain of skin, paraesthesia [tingling, numbness or pins and needles], sensitive skin, skin burning sensation, skin discomfort, and skin sensitisation
Valvassori SS, Resende WR, Budni J, Dal-Pont GC, Bavaresco DV, Reus GZ, et al
Cardiometabolic Benefits Extensive Research Clinical trials document comprehensive improvements in cardiometabolic risk factors including blood pressure reductions of 6-8 mmHg systolic, triglyceride decreases of 25-35%, and improvements in HDL cholesterol
Bible KC, Kebebew E, Brierley J, Brito JP, Cabanillas ME, Clark TJ Jr, et al