What is an early symptom of frostbite?

An early symptom of frostbite is often described as a "pins and needles" sensation. This sensation, medically known as paresthesia, occurs due to the initial freezing of the skin and underlying tissues. When exposed to cold temperatures, nerve endings can become irritated, leading to abnormal sensations in the affected areas. This symptom typically signals that the tissues are beginning to be adversely affected by the cold, though they are not yet in a more advanced state of frostbite.

As frostbite progresses, other symptoms such as redness, pain, and swelling can develop, indicating that the condition is worsening. However, the "pins and needles" sensation is distinctive because it is often one of the first alerts that the body's normal sensation in that area is being disturbed due to cold exposure. Recognizing this early symptom is crucial for prompt action to prevent more severe frostbite and potential tissue damage.