Symptoms of upper respiratory tract infection

summary

Upper respiratory tract infection, referred to as Shanggan, is the general term of acute inflammation including nasal cavity, pharynx or larynx. Generalized Shanggan is not a disease diagnosis, but a group of diseases, including common cold, viral pharyngitis, laryngitis, herpangina, pharyngeal conjunctival fever, bacterial pharyngeal tonsillitis. Shanggan in a narrow sense, also known as the common cold, is the most common acute respiratory infectious disease, which is self limiting, but the incidence is high. It occurs 2-4 times a year in adults and 6-8 times a year in children. The disease can occur all year round, especially in winter and spring. Symptoms of upper respiratory tract infection? Let's talk about it

Symptoms of upper respiratory tract infection

The incubation period is 1-3 days, which varies with the virus. Enterovirus is short, adenovirus and respiratory syncytial virus are long. The main manifestations are nasal symptoms, such as sneezing, nasal congestion, runny nose, cough, dry throat, itching or burning sensation, and even postnasal drip. At the same time or a few hours after the onset of symptoms such as sneezing, nasal congestion, runny nose and so on. After 2-3 days, the nasal mucus became thick, often accompanied by sore throat, tears, hypoesthesia, dyspnea, hoarseness, etc. Generally no fever and systemic symptoms, or only low fever, discomfort, mild chills, headache. Physical examination showed nasal mucosa congestion, edema, secretions, pharyngeal mild congestion.

When complicated with eustachian tube inflammation, there may be hearing loss and other symptoms. Purulent sputum or severe symptoms of lower respiratory tract suggest viral infection other than rhinovirus or secondary bacterial infection. If there is no complication, it can be cured in 5-7 days.

Acute viral laryngitis is mostly caused by rhinovirus and adenovirus. The clinical features were hoarseness, difficulty in speaking, cough pain, fever, sore throat or cough. Physical examination showed laryngeal edema and congestion, mild swelling and tenderness of local lymph nodes, and wheezing sound of larynx.

matters needing attention

At present, there is no specific antiviral drugs for antiviral treatment, and the abuse of antiviral drugs can cause the phenomenon of cold virus resistance. Therefore, if no fever, normal immune function, more than two days of onset of patients generally do not need to apply. Immunodeficient patients can be used early. Broad spectrum antiviral drugs ribavirin and oseltamivir have strong inhibitory effect on respiratory syncytial virus and can shorten the course of disease.