Histamine can be found in certain foods and somefoodsrelease histamine stored in the body. What Causes High Histamine Levels? Allergy vs. Intolerance An intolerancewhether to a food or a chemicalis different from a true allergy. Dowell / Getty Images An intolerance usually takes place if your body lacks certain enzymes needed to digest or process a substance. An allergic reaction comes up whenever your body’s immune system identifies and attacks an allergen....

A Fungal Infection Histoplasmosisis a fungal infection, usually of the lungs. It is due to breathing in fungal spores from bird or bat feces in the soil. The fungal spores become airborne when the soil is disturbed, sometimes by construction or clean-up projects. Cavan Images / Getty Images The infection can be mild or severe. The fungus can spread to many body parts, including the lungs and nervous system. This infection is rare....

This includesserodiscordant couplesin which one partner isHIV-positiveand the other isHIV-negative. Taking PrEP does not mean you’re able to stopusing condomsor avoid traditional risk-reduction strategies. Studies are currently underway to evaluate Descovy for PrEP in people who engage in receptive vaginal sex. 802290022 / Getty Images For these individuals, condoms and other traditional preventive strategies may be a more practical solution. In addition, the healthcare provider will order blood tests to check yourkidney functionorliver function....

When the immune defenses are compromised, a person can developAIDS(acquired immunodeficiency syndrome). HIV is mainly transmitted through anal or vaginal sex. This article explains the causes and symptoms ofHIV/AIDS, including how the disease is diagnosed and treated. Illustration by Mira Norian for Verywell Health HIV and AIDS: What Are the Differences? HIV is avirus that can lead to AIDSif the infection is left untreated. AIDS is the final stage of HIV....

People who hoard are called hoarders. Definition of Hoarding People with hoarding disorder excessively save items that others may view as worthless. Hoarding vs. PhotoAlto/Frederic Cirou / Getty Images Collecting Hoarding is not the same as collecting. Collectors look for specific items, such as model cars or stamps, and may organize or display them. People with hoarding disorder often save random items and store them haphazardly. Some may also feel safer surrounded by the things they save....

Another common example is something called the “ectopic kidney. These structures will eventually form the kidney and the ureter. Why do we need to understand this formative process? John Kelly / Tetra / Getty Images This process is called rotation, while the ascent of a kidney to its final location is called migration. This process is completed by the time an embryo is 8 weeks old. Horseshoe Kidney Formation A horseshoe kidney is what we call a “fusion anomaly....

Human herpesvirus 6 (HHV-6) is a common virus that causesroseolain children. HHV-6 doesn’t always cause symptoms. This article discusses HHV-6. Pornpak Khunatorn / Getty Images They sometimes cause symptoms when you first become infected, though they often are asymptomatic. It is also possible for a human herpesvirus to reactivate at some point down the road. It can quickly spread through daycare centers and is most common between ages 6 and 24 months....

The excessive fluid increases pressure inside the skull, affecting the brain’s ability to function normally. CSF is a clear fluid that bathes and cushions the brain, protecting and providing it with vital nutrients. CSF flows around the spinal cord and through the brain’s ventricles before being reabsorbed into the bloodstream. undefined undefined / Getty Images Congenital hydrocephaluscan be brought on by inherited genetic abnormalities or developmental disorders affecting the brain’s CSF flow....

Hearing Everyday Sounds as Abnormally Loud Hyperacusisis a problem that causes ordinary sounds to be sensed as abnormally loud. Even everyday sounds, like washing your hands or listening to the radio, may be painfully loud. If you have hyperacusis, you may have sensitivity to sounds that others find normal. Ekaterina Goncharova / Getty Images You may find regular sounds to be painful, frightening, or unpleasant. The development of hyperacusis is not well understood....

HBOT involves sitting in a hyperbaric chamberan enclosed space filled with high-pressure oxygen and breathing. This allows your lungs to take in more oxygen, thereby increasing circulating oxygen in your bloodstream. This article explores hyperbaric chamber therapy. Verywell / Brianna Gilmartin It discusses how HBOT works and what it treats. It also explains the possible side effects of hyperbaric treatment and whether or not insurance covers it. What Is a Hyperbaric Chamber?...

Hypercalcemia, an elevated calcium level in the blood, is a serious situation. It can cause vague effects, such as a loss of appetite and fatigue. But if severe or acute, hypercalcemia can affect your muscles and heart rate. TEK IMAGE/SCIENCE PHOTO LIBRARY / Getty Images High blood calcium is not common, but it can develop due to illnesses like ocancer. Hypercalcemia Symptoms Many of the symptoms of hypercalcemia are ones that are characteristic of other conditions....

Potassium is one of the most common chemical elements in our bodies, mostly existing inside our cells. Hyperkalemiais the term for high potassium levels in your blood. A normalpotassiumlevel for adults is considered 3.6 to 5.2 mEq/L. Verywell / Joshua Seong When your body is dehydrated, your urine output is decreased. Any excess of electrolytes is expelled from your body through urine, sweat, and the digestive tract. When levels increase or decrease, the kidneys begin responding immediately....

It also explores the treatments that can slow the progression of CKD, including medications and specialist procedures. CKD and high blood pressure make for a deadly combination. Research suggests that 85% to 95% of people with mild to moderate CKD haveclinical hypertension. stefanamer / Getty Images When most people think about thekidneys, they generally regard them as the filtration system of the body. This causes water in the body to be retained which, in turn, increases blood pressure....