Drug addiction, also known as substance use disorder, is a chronic and complex condition characterized by the compulsive use of drugs despite harmful consequences. It affects the brain’s reward, motivation, and self-control systems, leading to physical and psychological dependence. Substance use disorder can involve legal or illegal drugs, including prescription medications, and often requires long-term management and support. Symptoms Symptoms …

Foot drop is a condition characterized by difficulty lifting the front part of the foot, leading to dragging of the toes while walking. It is not a disease itself but a sign of an underlying neurological, muscular, or anatomical problem. People with foot drop often adopt a high-stepping gait to prevent the toes from catching on the ground. The condition …

Dressler syndrome is an inflammatory condition that affects the sac surrounding the heart, known as the pericardium. It typically develops weeks to months after injury to the heart muscle, most commonly following a heart attack, heart surgery, or chest trauma. The condition is believed to result from an autoimmune response in which the body’s immune system reacts to damaged heart …

Down syndrome is a genetic condition caused by the presence of an extra copy of chromosome 21, a situation known as trisomy 21. This additional genetic material affects physical growth, facial features, and cognitive development. Down syndrome is one of the most common chromosomal conditions and varies widely in its effects, with individuals showing different abilities, health challenges, and levels …

Double-outlet right ventricle is a rare congenital heart defect in which both major arteries of the heart, the aorta and the pulmonary artery, arise mainly or entirely from the right ventricle instead of one from each ventricle. This condition is present at birth and affects how oxygen-rich and oxygen-poor blood circulate through the body. The severity and clinical presentation vary …

Double uterus, also known as uterus didelphys, is a rare congenital condition in which a female is born with two separate uterine cavities instead of one. This occurs due to incomplete fusion of the Müllerian ducts during fetal development. In some cases, a person may also have two cervices and, less commonly, a divided or double vagina. Many individuals with …

Dizziness is a common symptom that describes a range of sensations, such as feeling lightheaded, unsteady, faint, or as if the surroundings are spinning. It is not a disease itself but a signal of an underlying condition affecting balance, blood flow, the inner ear, or the nervous system. Dizziness can occur occasionally and resolve on its own, or it may …

Diverticulitis is a digestive condition that occurs when small pouches, known as diverticula, that form in the lining of the digestive tract become inflamed or infected. It most commonly affects the large intestine and can range from mild to severe. Diverticulitis may develop suddenly and can require medical treatment depending on severity. Symptoms Symptoms can vary from mild discomfort to …

Dissociative disorders are a group of mental health conditions characterized by a disruption in the normal integration of consciousness, memory, identity, emotion, perception, or behavior. These disorders are often associated with trauma and serve as a psychological coping mechanism in response to overwhelming stress. The severity and presentation vary widely among individuals. Symptoms Symptoms depend on the specific type of …

A dislocated shoulder occurs when the upper arm bone is forced out of its normal position in the shoulder socket. It is one of the most commonly dislocated joints due to the shoulder’s wide range of motion. Dislocated shoulders often result from trauma or sudden force and require prompt medical attention to prevent further injury. Symptoms Symptoms are usually immediate …