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Table of ContentsView AllTable of ContentsAnatomyFunctionAssociated ConditionsDiagnosis Table of ContentsView All View All Table of Contents Anatomy Function Associated Conditions Diagnosis Ventricles of the brain are cavities within the brain that produce and storecerebrospinal fluid(CSF). This liquid surrounds yourbrainandspinal cord, cushioning them and protecting them fromtrauma. It is also responsible for removing waste and delivering nutrients to your brain. The four brain ventricles are essential to maintaining yourcentral nervous system(CNS), which your brain and spinal cord comprise....

Table of ContentsView AllTable of ContentsPurposeSignsWhen to Call Your Healthcare ProviderCoping Table of ContentsView All View All Table of Contents Purpose Signs When to Call Your Healthcare Provider Coping Braxton Hicks contractions happen when your womb contracts and relaxes intermittently during pregnancy. They’re also sometimes called false labor, pre-labor, or practice contractions since they’re often mistaken for true labor contractions. While Braxton Hicks contractions can happen throughout pregnancy, you typically don’t feel them until your second or third trimesters....

Table of ContentsView AllTable of ContentsWhat They’re Used ForTypesHow They’re UsedAdvantagesDisadvantages Table of ContentsView All View All Table of Contents What They’re Used For Types How They’re Used Advantages Disadvantages A butterfly needle, also known as a scalp vein set or winged infusion set, is a device used to draw blood from a vein or deliverintravenous (IV) therapyto a vein. A butterfly needle consists of a very thin needle, two flexible “wings,” a flexible transparent tubing, and a connector....

Table of ContentsView AllTable of ContentsWhat Are They?AppearanceCompared to BirthmarksCausesAssociated ConditionsWhen to Seek Medical CareDiagnosisTreatment Table of ContentsView All View All Table of Contents What Are They? Appearance Compared to Birthmarks Causes Associated Conditions When to Seek Medical Care Diagnosis Treatment Cafe-au-laitspots (CALS) are brown spots on the skin. They are a type of birthmark, meaning part of the skin has a different color from the rest. These spots are often present at birth but may appear or become more visible with age....

Table of ContentsView AllTable of ContentsTypesSymptomsCauses and Risk FactorsDiagnosisTreatmentPrognosisCoping Table of ContentsView All View All Table of Contents Types Symptoms Causes and Risk Factors Diagnosis Treatment Prognosis Coping Carcinoid lung tumors, also known as lung carcinoids,account for about 1% to 2% of lung cancers.These tumors, their risk factors, and their symptoms are different fromnon-small cell lung cancer(NSCLC) andsmall cell lung cancer(SCLC), which are the more common types of lung cancer. For example, younger people and non-smokers are more likely to develop carcinoid lung tumors....

Table of ContentsView AllTable of ContentsTypesSymptomsCausesDiagnosisTreatmentPrevention Table of ContentsView All View All Table of Contents Types Symptoms Causes Diagnosis Treatment Prevention Cataracts are the leading cause of vision loss among people over age 55. They can make your vision appear fuzzy or blurry, as if you are looking through a fogged-up window. Cataracts can develop due to normal aging.Additionally, risk factors such asdiabetesandsmokingcan also predispose you to cataracts. Treatment can range from wearing stronger eyeglasses to surgical removal of the cataract, which may include replacement of thelens in your eye....

Table of ContentsView AllTable of ContentsFunctionCauses of Abnormal LevelsTestingFurther TestingSymptoms of Abnormal LevelsEffects of MedicationTreatment OptionsOutlookWhen to Contact a Healthcare Provider Table of ContentsView All View All Table of Contents Function Causes of Abnormal Levels Testing Further Testing Symptoms of Abnormal Levels Effects of Medication Treatment Options Outlook When to Contact a Healthcare Provider Catecholamines, like adrenaline and dopamine, are chemical messengers released in response to emotional or physical stress. Catecholamines prepare the body to take action....

Table of ContentsView AllTable of ContentsFunctionTypesRole in HIV InfectionRole in HIV DiagnosisRole in HIV Treatment Table of ContentsView All View All Table of Contents Function Types Role in HIV Infection Role in HIV Diagnosis Role in HIV Treatment Without CD4 T helper cells, the immune system cannot recognize and coordinate a defensive response to diseases likeHIV. This is when a person is said to beimmunocompromised. This article explains what CD4 T cells are, their role in HIV infection, and how they are involved in the diagnosis and treatment of HIV....

Table of ContentsView AllTable of ContentsFunctionTypesSignificance Table of ContentsView All View All Table of Contents Function Types Significance Cells, such as the ones in the human body, need a way to interact with and receive signals from substances such ashormones,drugs,antigens, or even sunlight. That’s where cellular receptors come in. A receptor is a protein molecule in a cell or on the surface of a cell to which a substance can bind, causing a change in the activity of that particular cell....

Table of ContentsView AllTable of ContentsDefinitionHow Chiggers BiteSigns and SymptomsTreatmentPreventionFrequently Asked Questions Table of ContentsView All View All Table of Contents Definition How Chiggers Bite Signs and Symptoms Treatment Prevention Frequently Asked Questions Chiggers are tiny, biting pests that feed on skin and leave behind itchy, reddish bumps. They’re active during warm weather and typically latch onto you when you move through their habitat, which is tall grass, weeds, and wooded areas, especially near water....

Table of ContentsView AllTable of ContentsSymptomsCausesDiagnosisTreatmentPrognosisFrequently Asked Questions Table of ContentsView All View All Table of Contents Symptoms Causes Diagnosis Treatment Prognosis Frequently Asked Questions If you havehigh cholesterol, you may notice xanthelasma, which are slightly elevated or flat yellow-tinged growths on your skin. These are cholesterol deposits, and they generally accumulate on or around your eyelids. They are a common side effect of high concentrations of lipids in your blood....

Table of ContentsView AllTable of ContentsGastrointestinal SymptomsGastrointestinal ComplicationsExtraintestinal SymptomsWhen to See a Healthcare ProviderSummary Table of ContentsView All View All Table of Contents Gastrointestinal Symptoms Gastrointestinal Complications Extraintestinal Symptoms When to See a Healthcare Provider Summary Crohn’s diseaseis a chronicinflammatory bowel diseasethat primarily affects the gastrointestinal tract but can affect other organs in the body too. Crohn’s disease symptoms that involve gastrointestinal issues include bloating, flatulence, cramping diarrhea, nausea, vomiting, and blood in stools....

Table of ContentsView AllTable of ContentsWhat Is a Chronic Ear Infection?SymptomsDiagnosisTreatmentComplicationsFrequently Asked Questions Table of ContentsView All View All Table of Contents What Is a Chronic Ear Infection? Symptoms Diagnosis Treatment Complications Frequently Asked Questions When anear infectiondoes not go away or keeps coming back, it is called a chronic ear infection. It often involves a hole in the eardrum, the tissue that separates the outer ear and middle ear, that does not heal....