Diagnosis of acute laryngitis is mainly based on symptoms.

急性喉炎的诊断主要基于症状。

Generally speaking, for acute laryngitis, the treatment is resting the vocal cords, as well as getting fluids, and pain medications.

对于急性喉炎，治疗就是让声带休息、多饮水，以及疼痛处理。

Acute laryngitis is most common and it's usually due to an upper respiratory tract infection, most often due to a virus.

急性喉炎是最常见的，通常由于上呼吸道感染，最常见病因为病毒感染。

Acute laryngitis usually lasts for less than three weeks, and usually resolves on its own, although antibiotics are helpful for bacterial laryngitis.

急性喉炎通常病程不超过3周，具有自限性，但抗生素对细菌感染性喉炎很有效。

Bacterial infections are another cause of acute laryngitis, and sometimes they can develop during or right after a viral infection - that's called a superinfection.

细菌感染是急性喉炎的另一大常见病因，有时可伴发或继发于病毒感染，即二重感染。

Finally, there's overuse of the voice, like yelling or a really prolonged karaoke session involving the Beatles, that could lead to both acute and chronic laryngitis.

最后，过度发声，比如大喊大叫，或是长时间唱披头士的卡拉OK，会导致急性或慢性喉炎。

In acute laryngitis, the goblet cells to over secrete mucus leading to congestion of the airway, and immune cells like neutrophils and macrophages release chemicals that cause pain and swelling.

急性喉炎中，杯状细胞分泌过多黏液，导致气道阻塞；免疫细胞如中性粒细胞、巨噬细胞释放化学物质产生疼痛和肿胀感。