People who recover from COVID-19 do develop an immune response to the disease after infection; however, these antibodies usually decline after 8 months. The immune system remembers and recognizes a virus infection after a person recovers from it. If the body is exposed to the same infectious agent again, immune cells and proteins that circulate …

In some cases, anxiety can make you feel feverish without actually increasing your body temperature. In other cases, it can cause a recordable fever In some cases, anxiety can make you feel feverish without actually increasing your body temperature. In other cases, it can cause a recordable fever.  Fever is defined as a body temperature of 100.4 F or more …

In adults, a clogged tear duct will typically heal on its own unless it becomes infected. Learn about symptoms, causes, and treatment options In adults, a clogged tear duct will typically heal on its own unless it becomes infected. You can open up a blocked tear duct with a combination of warm compress and massage. Babies, however, may require medical …

A clogged ear is typically temporary, and your ear will likely clear on its own within a few hours or days depending on the cause While a clogged ear may not necessarily be painful, it can be frustrating, especially if it muffles your hearing. But a clogged ear is typically temporary, and your ear will likely clear on its own …

The Brazilian wandering spider, or banana spider, can cause painful bites that may result in death, especially in very young children and elderly adults The Brazilian wandering spider, also called the banana spider, is considered the most venomous spider in the world. Found in northern regions of California, Texas, and North Carolina, banana spiders can cause painful bites that may …

Level I autism is the mildest form of autism and only requires minimal support. Learn about signs and symptoms of level I, level II, and level III autism Autism spectrum disorder (ASD) is a neurological developmental disorder that affects how a person communicates and interacts with others. People with ASD are classified into three levels depending on the severity of …

Continuous positive airway pressure (CPAP) is a type of noninvasive ventilation (NIV). Yes, continuous positive airway pressure (CPAP) is a type of noninvasive ventilation (NIV). Noninvasive ventilation is a method of providing breathing or respiratory support to a patient without the establishment of any invasive airway (such as an endotracheal tube), which needs more maintenance. Noninvasive ventilation is of two …

A high diastolic pressure is associated with an increased risk of stroke, heart attack, and other cardiovascular problems. Blood pressure is the force exerted by the blood column against the walls of arteries, which function to carry blood to different parts of the body. Blood pressure is measured in the following two variables: Systolic (the number on top): The pressure …

Consuming two to three Brazil nuts per day is unlikely to pose a health risk; however, eating 50 or more nuts a day may cause radiation toxicity. Brazil nuts have a high amount of natural radionuclide, making them 1000 times more radioactive than other foods. They consist of a significant amount of radium that contributes to their radioactivity. Brazil nuts …

While it is difficult to predict how long the final stage of dementia will last, most patients survive for one to three years. Every patient is different. So, it is hard to predict how long the final stage of dementia will last. Most patients may survive for one to three years. Dementia decreases the affected person’s overall lifespan, but it …