ADD (attention deficit disorder): ADHD is a common condition that affects children and adolescents, while ADD is more common in adults. ADHD is the most commonly diagnosed mental disorder of children and is more common in boys than in girls. Children with ADHD generally have greater problems paying attention or concentrating. They can’t seem to follow directions and are easily bored or frustrated with tasks. They also tend to move constantly and are impulsive, not stopping to think before they act.
The exact cause of ADHD is not known, although researchers continue to study the brain for clues. There are no laboratory tests for ADHD.
The diagnosis is made based on the child’s symptoms and behavior. health care professionals, such as pediatricians and child psychologists can diagnose ADHD with the help of standard guidelines from the American Academy of Pediatrics. The doctor may ask for input from the child’s parents, teachers, and other adults who are familiar with the child’s symptoms.
Treatment for ADHD is multifaceted. It consists of ADHD medications or behavioral modification therapy or both. Studies have established the safety and effectiveness of using stimulant medications, other drugs, and behavioral therapy.
Addiction: An uncontrollable craving, seeking, and use of a substance such as alcohol or another drug. Dependence is such an issue with addiction that stopping is very difficult and causes severe physical and mental reactions.
- Addison anemia
Addison anemia: A blood disorder caused by a lack of vitamin B12. Patients who have this disorder do not produce the substance in the stomach that allows the body to absorb vitamin B12. This substance is called intrinsic factor (IF). Addison anemia, better known today as pernicious anemia (PA), is characterized by the presence in […]
- Addison disease
Long-term underfunction of the outer portion of the adrenal gland. In medical terms, chronic insufficiency of the adrenal cortex. This may be due to a number of different insults to the adrenal including physical trauma, hemorrhage, and tuberculosis of the adrenal, and destruction of the cells in the pituitary gland that secrete ACTH (adrenocorticotropic hormone) […]
- Addisonian anemia
Addisonian anemia: A blood disorder caused by a lack of vitamin B12. Patients who have this disorder do not produce the substance in the stomach that allows the body to absorb vitamin B12. This substance is called intrinsic factor (IF). Addisonian anemia, also called pernicious anemia (PA), is characterized by the presence in the blood […]
- Additive genetic effects
Additive genetic effects: A mechanism of quantitative inheritance such that the combined effects of genetic alleles at two or more gene loci are equal to the sum of their individual effects.