What are the 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.

What are the 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.

Acute viral pharyngitis is caused by rhinovirus, adenovirus, enterovirus and respiratory syncytial virus. The clinical features were itching or burning sensation in the pharynx, cough was rare, and sore throat was not obvious. When swallowing pain, often prompt streptococcus infection. Adenovirus infection may have fever and fatigue. Adenovirus pharyngitis may be accompanied by conjunctivitis. Physical examination showed obvious congestion and edema of pharynx, swelling and tenderness of submandibular lymph nodes.

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

It is mainly caused by adenovirus and Coxsackie virus. The clinical manifestations were fever, sore throat, photophobia and tears. Physical examination showed obvious congestion of pharynx and conjunctiva. The course of disease is 4-6 days. It often occurs in summer. It is common in children and easy to spread among swimmers.