Final answer:
Normal acrocyanosis can last for less than 20 minutes when a person is warm.
Step-by-step explanation:
Normal acrocyanosis refers to the bluish discoloration of the hands and feet due to reduced blood flow. It is a benign condition that occurs in response to cold temperatures or emotional stress.
The duration of normal acrocyanosis can vary, but it typically lasts for less than 20 minutes when the person is warm.
If the bluish discoloration persists for longer periods of time or is accompanied by other symptoms, it is important to seek medical attention.