BODY SYSTEMS AFFECTED

What Is Unexplained Blurred Vision? Unexplained blurred vision is unclear or distorted vision that is not caused by allergy, poor refraction (eye test), medication side effects, metabolic disorders, or defects in any part of the eyeball, optic nerve, or in ...

What Is Pneumoccocal Septicemia? Pneumococcal septicemia (sepsis) is a life-threatening syndrome characterized by a cascade of systemic (body-wide) inflammatory responses to lung infection caused by bacterial infection spread to the bloodstream. It is fatal in about 40% of cases, showing ...

What Is Lymphocytic Bronchoalveolitis? Lymphocytic bronchoalveolitis is a pulmonary disorder characterized by lymphocytic airway inflammation of the bronchi (main passageways branching from the windpipe), bronchioles (small passageways), and alveoli (air sacs) at the end. The chronic, productive cough that develops ...

What Is Irritability? Irritability is a mental state characterized by negativity and excessive response to annoyance. Irritability can be a feature of many diseases, malnutrition, and side effects of certain prescribed medications and over the counter drugs. What Is Irritability In Celiac Disease ...

What Is Occipital Lobe Epilepsy With Cerebral Calcifications? Occipital lobe epilepsy with cerebral calcifications is a seizure disorder that develops from calcium deposits in the brain. This condition is characterized by repetitive abnormal electrical discharges within the brain that may ...

What Is Migraine? Migraine is a neurologic disorder characterized by reduced cerebral blood flow that causes a severe headache. The pain is usually on one side of the head, pulsates, and is aggravated by bodily exertion that increases blood pressure. ...

What Is Epilepsy? Epilepsy is a dysfunctional disorder of the brain characterized by recurring seizures also called convulsions. Q: What happens in a seizure? A: During a seizure  abnormal electrical discharges occur within the brain. Not all seizures have the same intensity ...

What Is Cortical Calcifying Angiomatosis? Cortical calcifying angiomatosis is a cortical vascular (brain blood vessel) abnormality that is characterized by calcification of blood vessels and is usually present in the parietal or occipital cortical and subcortical regions of the brain.1 ...

What Are Brain Blood Flow Abnormalities? Brain blood flow abnormalities, or cerebral perfusion abnormalities, such as spasm of blood vessels causing inadequate blood flow to the brain, are characterized by impaired brain function and thinking. Q: What is cerebral perfusion? A: ...

What Is Brain Atrophy? Brain atrophy is a degenerative condition of the brain characterized by loss of brain tissue, causing the brain to shrink. Q: How does loss of brain tissue affect the body? A: Loss of brain tissue will ...

What Is Chorea? Chorea is a movement disorder characterized by brief, jerky, purposeless or writhing involuntary movements of the distal limbs, head, and face that may occur during voluntary movement or at rest. Chorea has a large number of causes, ...

What Is Gluten Ataxia? Gluten ataxia is a degeneration of the cerebellum (lower brain) caused by an immune reaction to gluten that is characterized by positive anti-gliadin antibodies, motor abnormalities including upper or lower limb ataxia, gait ataxia, and dysarthria ...

What Is Gait Ataxia? Gait ataxia is a cerebellar (lower brain) disorder characterized by defective muscular coordination of skeletal muscles used for locomotion (walking). Q: What is defective muscle coordination for walking? A: The cerebellum does not initiate movements but ...

What Is Lymphadenopathy? Lymphadenopathy is an alteration of lymph nodes that is characterized by enlargement of lymph nodes greater than 1.5 cm caused by proliferation (increased production) of lymphocytes within the node. Q: What are lymph nodes? A: Lymph nodes ...

What Are Extraintestinal Lymphomas? Extraintestinal lymphomas (non-Hodgkin’s) are malignancies that arise in peripheral lymphatic tissue outside the intestinal tract from B-cell and T-cell lymphocytes. Q: What is peripheral lymphatic tissue? A: Peripheral lymphatic tissue includes lymph vessels, lymph, lymph nodes, and ...