Malabsorption Disorders

What Is Hypocalciuria? Hypocalciuria is the term for an abnormally low level of calcium in the urine. This laboratory finding indicates low urinary excretion of calcium by the kidneys, which is an early renal compensatory mechanism or attempt to conserve ...

What Is Osteonecrosis? Osteonecrosis is a bone disorder resulting from insufficient blood flow to a part of the skeleton and is characterized by resulting death of bone cells (necrosis). After a while the bone can collapse. If this condition is ...

What Is Osteomalacia? Osteomalacia is a metabolic bone disorder that causes abnormal skeletal changes characterized by generalized reduction in bone density (bone softening) in adults and pseudofractures (apparant on x-ray) with muscular weakness and bone tenderness. Bones have the normal amount of ...

What Is Osteitis Fibrosa Cystica? Osteitis fibrosa cystica is a metabolic bone disease characterized by decalcification and softening of bones with bone cyst formation and bone tumors developing from effects of chronic vitamin D deficiency causing hyperparathyroidism and parathyroid adenoma ...

What Is Bone Pain? Bone pain is pain or tenderness in bone tissue. Bone pain intensity and location depend on the causative disorder. Q: What are causative disorders of bone pain? A: Bone pain is a feature of various disorders ...

What Is Dysgeusia? Dysgeusia is impaired or altered sense of taste characterized by the inability to distinguish the flavor of a substance. Q: What causes loss of the ability to taste? A: Some causes of impaired taste include these health conditions: malnutrition, hypothyroidism, ...

What Is Night Blindness? Night blindness is a visual defect caused by lack of rhodopsin in the rods of the retina located in the back of the eyeball due to inadequate vitamin A. Q: How does inadequate vitamin A cause ...

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 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 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 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 Hypokalemic Rhabdomyolysis? Hypokalemic rhabdomyolysis is an acute and sometimes fatal disease due to its rapid progression of muscle destruction when untreated. It is characterized by the accumulation of by-products of skeletal muscle destruction in the renal (kidney) tubules ...