Lactose intolerance is a condition caused by a lack of an enzyme called lactase, which, in turn, causes the body to be unable to digest lactose, a sugar found in milk products.
Landau-Kleffner syndrome (also called infantile acquired aphasia, acquired epileptic aphasia, or aphasia with convulsive disorder) is a language disorder. It frequently occurs in normally-developing children, usually between three and seven years of age, and is characterized by the gradual or sudden loss of the ability use or comprehend spoken language.
Laryngeal Cancer (Cancer of the Larynx)
Laryngeal cancer includes cancerous cells found in any part of the larynx - the glottis, the supraglottis, or the subglottis.
Lateral Epicondylitis (Tennis Elbow)
Lateral epicondylitis, also known as tennis elbow, is characterized by pain in the back side of the elbow and forearm, along the thumb side when the arm is alongside the body with the thumb turned away. The pain is caused by damage to the tendons that bend the wrist backward away from the palm.
Some children and adults have an allergy or sensitivity to latex (rubber). Reactions can be seen when products made from latex come in contact with the person's skin, mucous membranes (like the mouth, genitals, bladder or rectum), or the bloodstream (during surgery).
Leukemia is cancer of the blood cells, usually the white blood cells. Leukemic cells look different than normal cells and do not function properly.
The risk for breast cancer and many other forms of cancer is increased with Li-Fraumeni syndrome (LFS), a genetic autosomal dominant cancer syndrome.
Ligament Injuries to the Knee
There are four major ligaments in the knee. Ligaments are elastic bands of tissue that connect bones to each other and provide stability and strength to the joint. The four main ligaments in the knee connect the femur (thighbone) to the tibia (shin bone), and include the following: the anterior cruciate ligament (ACL), the posterior cruciate ligament (PCL), the medial collateral ligament (MCL), and the lateral collateral ligament (LCL).
Tumors are abnormal masses of tissue that form when cells begin to reproduce at an increased rate. The liver can grow both non-cancerous (benign) and cancerous (malignant) tumors.
Low Milk Production
Occasionally, a delay in the time when milk "comes in" turns into an ongoing problem with low milk production. Sometimes, a mother has been producing sufficient amounts of milk, and then milk production slowly, or quite suddenly, decreases.
Lumbar Disc Disease (Herniated Disc)
As we age, the intervertebral disc may lose water and become dried out. As this happens, the disc compresses. This may lead to the deterioration of the tough outer ring allowing the nucleus, or the inside of the ring, to bulge out. This is considered a bulging disc.
Lung Cancer (Condition)
Lung cancer is cancer that usually starts in the lining of the bronchi (the main airways of the lungs), but can also begin in other areas of the respiratory system, including the trachea, bronchioles, or alveoli.
While most tick bites are harmless, several species can cause life-threatening diseases. Two of these well-known diseases are Rocky Mountain Spotted Fever and Lyme disease.
Lymphedema Following a Mastectomy
Whenever the normal drainage pattern in the lymph nodes is disturbed or damaged (often during surgery to remove the lymph nodes), swelling of the arm may occur. Radiation may also cause swelling of the arm. This swelling of the arm, caused by an abnormal collection of too much fluid, is called lymphedema.