The psychosomatic aspects of skin disease were studied both clinically and experimentally, from the standpoint of immunology. We found that emotional stress has a great influence on the immune system, as was manifested in skin disease. Skin test in allergic patients significantly improved with autogenic training and relaxation. For clarification of the effects of autogenic training and relaxation, various parameters were simultaneously assessed during the treatment. The serum levels of histamine and dopamine-Β-hydroxylase fluctuated, as determined by the microvibration test. The levels of IgE and findings on the PK test varied only slightly. Before the onset of urticaria, there were changes in the life-style and considerable stress in daily life as well as exposure to an allergen. Using mice subjected to stress, the functions of T cells and macrophages were evaluated. Stress appeared to have a definite influence on the functions of these cells, as related to the important role of the immune system and skin. Thus, the role of stress in clinical disease must always be given consideration.