Frostbite
* appears as a white patch on skin.
* begins with a gray coloring, and then turns black.
* can affect even the hardiest breeds
  - also occur from exposure to the cold
* can be a very dangerous condition
  - insidious in onset
  - instantaneous if the skin is moist
  - superficial or deep
* can cause irreversible tissue damage and requires immediate medical attention
  - permanent damage and Hypothermia can be deadly
  - serious injury and needs immediate medical attention
  - lead to loss of a body part
* can occur gradually or rapidly
  - if skin comes into contact with the dry ice
  - on the ears, fingers, toes, face, or any exposed skin
  - quickly especially in very cold air and strong winds
  - with prolonged exposure
* can occur without accompanying hypothermia
  - suffering serious hypothermia
  - often take victims by surprise, since there is no pain initially
  - permanently damage the body, and severe cases can lead to amputation
  - set in very slowly - or very quickly
  - strike in any season, especially in the high country
* causes a loss of feeling and color in affected areas
  - usually occurs in extremities such as toes or fingers first
  - the skin to turn red
* comes in three levels of severity or degrees.
* constant risk if one walks in snow at high altitude.
* first appears as a patch of pale or white skin caused by constricted blood vessels.
* happens when healthy tissue is frozen by contact with extreme cold
  - soft tissue freezes
  - the body's survival mechanisms kick in during extremely cold weather
* is actual freezing of body tissue.
* is an injury
  - caused by freezing of the skin and underlying body tissues
  - to the body caused by freezing
  - another hazard experienced in extremely cold weather
  - books
* is caused by cold exposure, resulting in ice crystals forming in the skin
  - exposure of the body to cold
* is caused by exposure to extreme cold for a prolonged period of time
  - prolonged or intense cold
  - severe cold
  - ice crystal formation within the tissue
  - when the fluid inside the cells of body tissue freeze
  - characterized by white, waxy skin that feels numb and hard
  - classified as incipient, superficial, or deep
  - common during the late fall and early winter seasons
  - common, especially on ears, noses, and paws
  - damage to body tissue caused by that tissue being frozen
  - dangerous because it normally goes unnoticed beneath fur
  - destruction of body tissues due to freezing
  - harmful and painful
  - illnesses
  - more likely to occur if an animal has no shelter, or is injured
  - of critical concern to the outdoor person who exposes themselves to the cold
  - possible on exposed skin over short periods of time
  - software
* is the actual freezing of tissue
  - damage to the skin and underlying tissues caused by extreme cold
  - formation of ice crystals in living tissue
* is the freezing of body parts
  - local skin or body areas
  - skin or underlying tissues that occurs from prolonged exposure to cold
* is the freezing of the skin and underlying body tissues
  - due to exposure to extremely cold weather
  - localized freezing of parts of the body
* is the most common injury resulting from exposure to cold elements
  - from exposure to severe cold
  - outcome of cold stress
* is when the body's skin tissue is freezing or already frozen
  - skin freezes when exposed to freezing temperatures for a long period of time
* major problem when hiking in the cold.
* occurs from exposure to ambient or windchill temperature below freezing
  - in exposed areas of the body, such as hands and feet
  - more often when the wind is blowing, quickly taking heat from the body
  - when areas of tissue freeze in cold weather conditions
* occurs when body parts become frozen
  - tissues are exposed to freezing temperatures
  - flesh is frozen
  - parts of the body actually freeze
  - so much heat is lost that water in tissue close to the skin freezes
* occurs when the ears, nose, toes, and fingers become frozen and lose blood flow
  - fluids around the body's tissues freeze
* occurs when the skin becomes cold enough to actually freeze
  - is damaged by cold
  - water in body tissues freeze
* occurs when tissue actually freezes
  - tissues become frozen and ice crystals form inside cell membranes
* problem directly related to the sub-freezing temperatures of winter.
* real danger in the colder months and regions.
* severe reaction to cold exposure that can cause permanent harm to people
  - that can permanently damage exposed tissue
* typically affects the extremities, particularly the feet and hands
  - has a cascading effect
* usually affects the fingers, toes, heels, hands, nose and feet
  - involves hands, feet, or exposed skin areas such as the ears, cheeks, and nose
  - occurs without pain
* winter hazard to pets as well as people
* young woman with fair skin and short black hair.