Which part of the body is mainly affected by Seborrheic Dermatitis?

Seborrheic Dermatitis is primarily associated with areas of the body that have a high concentration of sebaceous (oil) glands. This condition often manifests as a red, itchy rash that can produce flaky scales. The scalp is a particularly common area for this condition, often referred to as dandruff when it occurs there. Inner ears may also be impacted, as they are nearby regions where oil production can influence skin health.

When considering the other locations mentioned in the options, the feet and hands are generally not affected by seborrheic dermatitis because this condition is associated with oil production rather than the dry skin typically found on extremities. The abdomen and back are not commonly affected either, as they do not have the same density of sebaceous glands as the scalp and face. Finally, while the face and neck can experience conditions related to oil production, seborrheic dermatitis specifically highlights the scalp and inner ears due to their anatomical correlation with oil gland distribution and the typical presentation of the dermatological condition in those areas.