Intangible costs are those related to pain, suffering, and reduced quality of life. These costs are less tangible and harder to quantify than direct and indirect costs but still crucial in comprehensive cost estimations. Tools like Quality-Adjusted Life Years (QALYs) and Disability-Adjusted Life Years (DALYs) are often used to estimate these costs. These metrics help in evaluating the overall impact of diseases on individuals' lives and well-being.
