CD4 and AIDS: TCM is more concerned with the clinical complaints of patients with AIDS, including abnormal symptoms and signs, lower level of quality of life (QOL), complications, opportunistic infections, and side effects of combination anti-retroviral therapy (cART) and not merely CD4+ T cell counts and viral lead-time is based on clinical practice with humanistic characteristics, a holistic approach, syndrome differentiation, and flexible prescription, which lead many Chinese medicine practitioners and patients to believe that TCM can treat any complex disease.