Generally, the main parts of the body on which eczema can appear are the folds of your body, like the back part of your elbow and the back part of your knee, on your face, on your hands and neck, as well as on your upper chest. if you are suffering from atopic eczema, all of the above mentioned areas can be affected, while the scalp, the trunk and the diaper area (in infants) may also be added to this list. Contact dermatitis can appear on any part of your body if that area comes in contact with an irritant substance or with a substance to which the patient is allergic. Lower legs, especially the ankle area, are affected by varicose eczema because this skin condition is caused by the poor circulation in your feet area.