B02.8

Clinical Causes: Reactivation of dormant varicella-zoster virus in nerve tissues Spread of the virus to adjacent areas, such as the ear canal Weakened immune system, increasing risk of complications Existing skin conditions that impair the skin's defenses Age-related immune decline, particularly in older adults

Key Symptoms: Pain, burning, or tingling sensation in the affected area Rash with blisters that follow a nerve pathway Itching or sensitivity around the rash Satellite lesions or spread of rash to nearby regions Symptoms specific to complications, such as ear pain, swelling, or discharge in herpes zoster otitis externa Hearing issues or tenderness around the ear in ear involvement Fever or general malaise during the active phase

Diagnosis Path: Diagnosis is primarily clinical, based on the appearance of the characteristic rash and patient's symptoms. A healthcare provider may also perform laboratory tests such as viral cultures or PCR to confirm the presence of herpes zoster virus, especially in complicated cases. Ear examinations can help identify herpes zoster otitis externa, and additional tests might be needed to rule out other infections or complications.

Treatment Protocols: Management of herpes zoster with complications typically involves antiviral medications, such as acyclovir, valacyclovir, or famciclovir, which can help reduce severity and duration. Pain relievers and topical treatments may be used to manage discomfort. In cases of herpes zoster otitis externa, appropriate measures to treat ear inflammation and prevent secondary bacterial infections are essential. Supportive care, including rest and skin care, is also recommended. It is important to seek medical advice for proper diagnosis and tailored treatment plans.