Public condition directory
Browse public condition summaries from China medical resources by stable specialty category.
Neck trauma
Neck trauma refers to injuries to the tissues, organs, blood vessels, or nerves in the neck due to external forces. Common types of trauma include traffic accidents, falls, firearm injuries, and injuries from fights. Injury types include cuts, stabs, contusions, and sprains.
View detailsGlobus pharyngis
Globus pharyngeus generally refers to various abnormal sensations or illusions in the pharynx other than pain, such as a feeling of a lump in the throat, crawling, stickiness, itching, or a sensation of obstruction during swallowing without actual dysphagia. It is more common in women.
View detailsHypopharyngeal cancer
Hypopharyngeal cancer refers to a malignant tumor originating in the hypopharynx, predominantly squamous cell carcinoma. This disease is common in middle-aged and elderly populations. Main symptoms include a foreign body sensation in the laryngopharynx, painful swallowing, difficulty swallowing, or progressive dysphagia, and hoarseness.
Chronic laryngitis
Chronic laryngitis is a chronic non-specific inflammation of the laryngeal mucosa, lasting for more than 3 months, primarily characterized by chronic inflammatory lesions of the vocal cords and ventricular folds. This condition is common among professionals who speak frequently in their work. The main symptom is varying degrees of voice change.
View detailsSinus cyst
A paranasal sinus cyst is a cystic mass that originates within the paranasal sinuses or develops from a tooth or tooth root and extends into the maxillary sinus. The paranasal sinuses are a group of air-filled cavities within the skull surrounding the nasal cavity, including the maxillary, ethmoid, sphenoid, and frontal sinuses. Paranasal sinus cysts primarily include mucocele, mucosal cyst, and maxillary sinus odontogenic cyst. Mucocele is the most common type, often unilateral, and frequently occurs in the ethmoid sinus, followed by the frontal sinus. Mucosal cysts are more common in the maxillary sinus. A maxillary sinus odontogenic cyst is formed when developmental abnormalities or lesions of the upper teeth protrude into the maxillary sinus. Paranasal sinus cysts grow slowly and are generally asymptomatic. However, an enlarging cyst can cause symptoms such as headache, nasal discharge, orbital pain, and ptosis if it compresses the sinus wall bone. Large cysts may invade the orbit and intracranial cavity, leading to globe fixation or blindness.
View detailsNasal bone fracture
Nasal bone fracture is one of the most common fractures in the human body. The nasal bone is wide and thin, making it susceptible to external forces and fractures. Nasal bone fractures can occur in isolation, or in severe cases, they can be accompanied by septal fractures, cartilage dislocation, fractures of the frontal process of the maxilla, sinuses, orbital walls, or skull base, leading to structural and functional abnormalities in the affected areas. The main symptoms include localized pain, epistaxis, nasal swelling, deviation of the nasal bridge, collapse and deformity of the nasal dorsum, and nasal obstruction. When orbital wall or skull base fractures are present, symptoms such as vision loss and cerebrospinal fluid leakage may occur.
View detailsEpiglottic cyst
Epiglottic cyst refers to a cystic mass formed by the retention of mucus due to obstruction or abnormal development of the mucous glands in the epiglottic mucosa. Epiglottic cysts are often asymptomatic. When the cyst is large, it can cause symptoms such as a foreign body sensation in the throat and difficulty breathing.
View detailsExternal auditory canal cholesteatoma
External auditory canal cholesteatoma is characterized by the proliferation of squamous epithelium in the external auditory canal due to various causes, leading to the accumulation of gelatinous debris containing cholesterol crystals. This condition is a well-defined benign cystic lesion that, due to its invasive nature resembling malignant tumors, often causes varying degrees of absorption and destruction of surrounding bone structures. It can occur at all ages, but is more common in middle-aged and elderly individuals, primarily presenting with otorrhea, otalgia, hearing loss, and facial paralysis. External auditory canal cholesteatoma is generally divided into four stages: Stage I: Confined to the external auditory canal with no obvious bone destruction. Stage II: Bone destruction of the external auditory canal, but without invasion of the tympanic cavity or mastoid. Stage III: Invasion of the tympanic cavity and/or mastoid. Stage IV: Invasion extending to external structures of the temporal bone.
View detailsPatulous Eustachian Tube
The Eustachian tube is a canal connecting the middle ear and the nasopharynx, whose function is to maintain the balance of air pressure inside and outside the tympanic cavity. The Eustachian tube is normally closed and opens momentarily only during actions such as swallowing, yawning, opening the mouth wide, and blowing the nose, allowing for gas exchange within the tympanic cavity. Patulous Eustachian tube (PET) refers to symptoms caused by the Eustachian tube pharyngeal opening remaining frequently open due to paralysis or atrophy of the pharyngeal muscles. This condition is common in individuals with a habit of sniffing and those with certain chronic diseases. The main symptoms include low-pitched tinnitus and autophony (difficulty hearing others speak, but hearing one's own voice too loudly).
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