VAS (Visual Analog Scale)

The Visual Analog Scale (VAS) is a tool used to measure subjective feelings, such as pain or mood. It usually consists of a straight line, typically 10 centimeters long, where one end represents 'no pain' or 'no distress', and the other end signifies 'worst possible pain' or 'extreme distress'. Individuals mark a point on the line that corresponds to their feelings. The distance from the 'no pain' end to the mark helps quantify their experience numerically, making it easier for healthcare providers to understand and assess their condition over time. This method is simple and effective for tracking changes in symptoms.