According to the different causes and scope of lesions, clinical manifestations can have different types: 1, the common cold commonly known as “cold”, also known as acute rhinitis or upper whistle khat, mostly caused by rhinovirus, followed by coronavirus, whistle syncytial virus, echovirus, coxsackievirus, etc.. The incubation period varies from 1 to 3 days, depending on the virus, with enteroviruses being shorter and adenoviruses and whistling syncytial viruses being longer. The main symptoms are nasal symptoms, such as sneezing, nasal congestion, and clear watery nose, but also cough, dry throat, itching or burning sensation, and even postnasal drip. The symptoms of sneezing, nasal congestion and clear watery nose may occur at the same time or a few hours after the onset of the disease. 2-3 days later, the nasal discharge becomes thicker and is often accompanied by sore throat, lacrimation, loss of taste, poor inspiration and hoarseness. There is usually no fever and systemic symptoms, or only low fever, malaise, mild chills and headache. Physical examination reveals congestion, edema, and secretions in the nasal mucosa and mild congestion in the pharynx. Symptoms such as hearing loss may be present in cases of coexisting pharyngotonsillitis. Purulent sputum or severe lower whistle symptoms suggest a combined viral infection other than rhinovirus or a secondary bacterial infection. If there are no complications, 5 to 7 days to heal. 2, acute viral pharyngitis or laryngitis (1) acute viral pharyngitis
Mostly caused by rhinovirus, adenovirus and enterovirus, whistle syncytial virus, etc.. Clinical features are itching or burning sensation in the pharynx, coughing is rare, and sore throat is not obvious. When swallowing is painful, it often suggests a streptococcal infection. Fever and malaise may be present with adenovirus and other infections. Adenoviral pharyngitis may be accompanied by ocular conjunctivitis. On physical examination, the pharynx is obviously congested and edematous, and the submandibular lymph nodes are enlarged and painful to palpation. (2) Acute viral laryngitis
Mostly caused by rhinovirus and adenovirus. The clinical features are hoarseness, difficulty in speaking, pain on coughing, often with fever, sore throat or cough. Physical examination shows edema and congestion in the larynx, mild enlargement and tenderness of local lymph nodes, and wheezing sounds in the larynx can be heard. 3, acute herpes pharyngitis often caused by coxsackievirus A, manifested as obvious sore throat, fever, the duration of the disease is about 1 week, mostly in the summer attacks, children are common, occasionally seen in adults. Physical examination reveals a congested pharynx, grayish-white herpes and superficial ulcers on the surface of the soft palate, uvula, pharynx and tonsils, surrounded by a red halo, later forming a herpes. 4, pharyngeal conjunctival fever is mainly caused by adenovirus, coxsackievirus, etc.. Clinical manifestations include fever, sore throat, photophobia, lacrimation, and obvious congestion of the pharynx and conjunctiva on physical examination. The course of the disease is 4-6 days, often occurs in the summer, children are common, swimmers are easy to spread. 5, bacterial pharyngeal – tonsillitis Mostly caused by hemolytic streptococcus, followed by Haemophilus influenzae, pneumococcus, staphylococcus, etc.. The onset of the disease is rapid, obvious sore throat, chills, fever (body temperature can be 39 ℃ or more). Physical examination shows obvious congestion in the pharynx, enlarged and congested tonsils with yellow purulent secretions on the surface, enlarged and painful submandibular lymph nodes, and no abnormal signs in the lungs.