Somatic Symptom Disorders (formerly known as somatoform disorders) are mental disorders characterized by prominent bodily symptoms that are not fully explained by an underlying medical condition or cause distress and functional impairment disproportionate to medical findings. Individuals with these conditions often present with various physical complaints such as pain, fatigue, dizziness, or palpitations in different parts of their body. Symptoms can be persistent and continuous in a single area, or they may be observed in multiple bodily systems simultaneously. Exhibiting excessive thoughts, feelings, or behaviors related to these symptoms can lead to significant distress or impairment in the person's daily life. These disorders can affect various bodily systems, including cardiovascular, respiratory, endocrinological, and dermatological systems. A related concept, 'psychological factors affecting other medical conditions,' refers to the presence of emotional or psychological factors that negatively impact the course or treatment of an existing medical illness.