frostbite anatomical infographic poster. flat medical . stages of hypotermia. hand with finger stage of healthy

frostbite hypothermia hand winter health medical care finger damage icon hospital blue red illness vector flat infographics diagnosis stage symptom healthy frostnip gangrene infection inflammation superficial frostburn windburn rewarming mountaineer chilblains exposure prevention design climber sports conditions permanent weather water mountain safety shivering human symbol icing concept cold anatomical infographic poster stages hypotermia deep healthcare dermatology