Hoarseness is a condition that can be caused by several causes, and may be temporary or require medical attention, depending on the context and accompanying symptoms. Here are some cases that may require concern and medical investigation:

Long duration of hoarseness: If hoarseness persists for a long time without improvement, medical evaluation may be needed.
Difficulty swallowing or speaking: If you have difficulty swallowing or speaking for a long time.
Pain or discomfort: If hoarseness is accompanied by pain or discomfort in the throat.
Persistent cough: If the hoarseness is accompanied by a continuous state of coughing.
Accompanying symptoms: If there are additional symptoms such as unexplained weight loss, or high temperature.
History of smoking or exposure to irritating factors: If you have a history of smoking or constant exposure to irritating factors such as dust or air pollution.

If you have any of these signs or if you are concerned about your condition, it is best to consult a doctor to evaluate the condition and determine the cause and appropriate treatment.