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Fainting is sudden, brief loss of consciousness that occurs because blood flow to the brain, and thus oxygen, is impaired. The lack of oxygen causes fainting, which lasts from a few seconds to a few minutes, at which time the person usually awakens.

Acute cholecystitis: causes and symptoms

Acute cholecystitis is an extremely common disorder characterized by a buildup of acute inflammation in the wall of the gallbladder. Such pathological process is accompanied by pronounced local manifestations, supplemented by general intoxication of the body. In this disorder, the specific clinical picture occurs only once. In the event that it recurs, talk about the chronic form. If there are no complications, the prognosis is good, and the person recovers completely. However, sometimes it causes a suppurative inflammatory process followed by gallbladder perforation or even sepsis.

Cystitis is a disease in which the bladder membranes are affected by pathogenic bacteria, causing inflammation with corresponding symptoms. Women suffer from cystitis more often, which is due to physiological peculiarities. However, cystitis also occurs in men. Even the first episode of the inflammatory process can develop into a chronic stage of the disease with frequent exacerbations and periods of remission. This means that all the discomfort associated with the disease - frequent urge to go to the toilet, pain, stinging, burning sensation in the lower abdomen - will recur again if exacerbations are not prevented. To prevent such a situation, you need to know the main causes of cystitis and its relapses and carry out timely prevention.

For many years, expectant mothers were urged to avoid coffee. And limit any caffeinated drinks

But coffee can be safer for expectant mothers than previously thought, according to a study involving tens of thousands of women and their children.
This finding contradicts previous studies and decades-old recommendations by health services in many countries that encourage women to either limit their caffeine intake or eliminate it altogether.
Now research by Australian scientists shows that some of these fears about caffeine are overblown and underpinned by strong evidence. However, they added that women should still follow the recommendations regarding the daily use of caffeine.

According to the study, low mood or lack of sleep can have a negative effect on the brain for two weeks.
Persistent lack of sleep affects the ability to work, he is sluggish, constantly wants to sleep and feels weak.

The good news is that workouts also affect long, but positively.

Lymph nodes on the human body are only a small part of the immune system.

They have a large number of important functions. The human body is a complex self-regulating mechanism that actively interacts with the environment. For example, the skin and most of the mucous membranes of humans daily meet with bacteria, viruses, protozoa and fungi, while maintaining the consistency of the composition and functions of the body.

Panic attacks are attacks of pronounced anxiety. They are unrelated to any particular situation, unpredictable, and can happen repeatedly. Attacks cause autonomic symptoms, such as chest pain and clenching, palpitations, difficulty breathing, and other symptoms, but no abnormalities of the internal organs.
Panic attacks should not be ignored. Although not life threatening, the condition can severely impair quality of life. A person who has experienced a panic attack at least once lives in anticipation of a panic attack—and does not know when it may be covered by anxiety. This can be managed - with the help of drugs and psychotherapy

What to do if your blood pressure is below normal. 
Normal blood pressure readings in a healthy person should range from 120 to 139/60 to 89.  If they go beyond these limits - it means either hypotension, in the case when the figures on the tonometer are below the recommended, or hypertension, if, on the contrary, above the desired. And if there are several groups of different drugs for the treatment of the latter, and many people know about its danger, the low pressure is often underestimated and not taken seriously.
What are the causes of hypotension, what are its symptoms, and are there ways to help yourself with this disease?

COVID-19 is best known for causing dry cough and making us taste and smell alike. But the coronavirus can also cause sleepless nights, scientists say.
Three out of four people with mild infection have insomnia and shortness of breath, a new university study has found.

Constipation is a condition classified as a standalone disease by ICD-10 (the international classification of diseases) and has specific causes and treatments. However, according to the World Gastroenterological Organization, constipation is a symptom of some pre-existing disease in humans.