... and discomfort induced by fever, headache,toothache.Usage:Cold compress: put the cold/hot bag into freezer to ... and for 60 seconds when be used continuously. Purpose:Cold compress: physical therapy for traumatic hemorrhage, heatstroke, itch, headache, ... strain, scald, fatigue.Hot compress: alleviate rheumatic pain, neural pain, sciatica, vertebral pain, improve ...