A rheostat is a device which is used to vary the resistance in an electrical circuit without interrupting the circuit.heostats are a kind of potentiometer. These devices can be used in a variety of settings, and are usually designed to be sealed so that environmental factors cannot interfere with the function of the circuit.
What are the types of allergic rhinitis? The two categories of allergic rhinitis include: Seasonal - occurs particularly during pollen seasons. Seasonal allergic rhinitis does not usually develop until after 6 years of age. Perennial - occurs throughout the year. This type of allergic rhinitis is commonly seen in younger children. What are the causes of allergic rhinitis? The most common causes of allergic rhinitis include the following: Pollen ; Dust mites ; Mold ; Animal dander ; What are the symptoms of allergic rhinitis? The following are the most common symptoms of allergic rhinitis. However, each child may experience symptoms differently. Symptoms may include: Sneezing ; Congestion ; Runny nose ; Itchy nose, throat, eyes, and ears ; Nosebleeds ; Clear drainage from the nose ; Children with perennial allergic rhinitis may also have the following:
RSV Symptoms. These symptoms usually appear in stages and not all at once. In very young infants with RSV, the only symptoms may be irritability, decreased activity, and breathing difficulties. RSV can also cause more severe infections such as bronchiolitis, an inflammation of the small airways in the lung, and pneumonia, an infection of the lungs. It is the most common cause of bronchiolitis and pneumonia in children younger than 1 year of age. Almost all children will have had an RSV infection by their second birthday. People infected with RSV usually show symptoms within 4 to 6 days after getting infected. RSV Care. Most RSV infections go away on their own in a week or two.