Why Does My Son’s Throat Have Blisters?

My son has blisters in his throat, it’s not red, he hasn’t had a high fever, and he occasionally has a runny nose. These symptoms could be caused by a viral herpes infection. He has taken medication but hasn’t improved. It’s likely to be pharyngitis, and I recommend localized treatment and anti-infective treatment.
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Why Does the Drainage of Excess Cerebral Fluid Gradually Increase After External Drainage?

A 34-year-old male, following a car accident and bilateral bone flap removal, underwent two craniotomy surgeries. 19 days later, he developed right-sided hydrocephalus and underwent an external hydrocephalus drainage procedure. The postoperative drainage fluid was minimal, but after three days, the amount of drainage fluid gradually increased. Inquiry regarding the cause and subsequent treatment methods.
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