For many years it was widely believed that the first variants of infectious bronchitis virus (IBV) occurred in the early 1950s as Jungherr et al. (1956) in the USA showed that the Connecticut (Conn) ...

Once nearly eradicated, the “old man’s disease” is back and suffocating younger miners. Federal cuts risk putting a solution ...

Medically reviewed by Amelia MacIntyre, DO Mucus, a fluid in your upper respiratory system, is usually clear. But a number of health conditions can cause it to turn brown. Also known as brown phlegm ...

According to Healthline, bronchitis is an infection that leads to irritation and inflammation in the bronchi and the airways of the lungs. This may lead to a hacking cough and the production of clear, ...

Campbell Ave, PO Box 245030, Tucson, AZ 85724-5030, USA; sguerra{at}arc.arizona.edu Background: Previous studies on the relationship of chronic bronchitis to incident airflow limitation and all-cause ...

OBJECTIVE: To evaluate the effect size of oral corticosteroid treatment on eosinophilic bronchitis in asthma, through systematic review and meta-analysis. METHODS: We systematically reviewed articles ...

If you're coughing up brown mucus, though, you should see a doctor because this could be a sign of bronchitis. Black mucus can materialize after inhaling dirt or dust; or after smoking cigarettes or ...

Melanonychia, also known as a dark or black line on the nail, causes a streak of dark pigmentation that runs along the nail bed. It can be a normal color variation, especially in people with ...

The sinuses are a system of connected hollow cavities in the face that contain air and a thin layer of mucus. The lining of all sinuses produces mucus, which moisturizes the airways and drains ...

Analysis of gravitational-wave data has identified black hole mergers involving objects with masses between 100 and 300 M ☉, providing strong evidence for intermediate-mass black holes.

The relationship between chronic obstructive pulmonary disease (COPD) and chronic bronchitis (CB) is important, significant and overlapping in nature. This review will analyze the relationship ...

A boxed warning, or black box warning, is the most serious warning issued by the Food and Drug Administration (FDA). Its purpose is to alert people about drug effects that may be dangerous.