It is generally recommended to see a physiotherapist for neck pain when the pain persists or becomes chronic, or if it significantly affects your daily activities. If self-care measures such as rest, gentle stretching, or over-the-counter pain medications don't provide relief within a few days, it may be a good time to seek professional help.
Additionally, if you experience severe or worsening neck pain, accompanying symptoms like numbness or tingling in the arms or hands, or if the pain is the result of an injury or accident, it is advisable to seek prompt care from a healthcare professional.