Acute vesicular inflammation.
Shingles. The infectious agent is the varicella zoster vims.
Inflammation of a sensory nerve, characterised by pain along the nerve and causing a line of blisters to form on the skin, usually found mainly on the abdomen or back, or on the face.
Painful raised lesions along nerve roots; also called shingles.
A painful herpesvirus infection running along certain nerve pathways; also known as shingles.
Herpes zoster, or shingles, is a skin eruption of acute nature, closely related to chickenpox and resulting in the appearance of small yellow vesicles, which spread over an area, dry, and heal by scabbing. It receives its name from. the Greek word for a ‘circingle’ or girdle, because it spreads in a zone-like manner along the intercostal nerves around half the chest. Herpes of the face also occurs, particularly on the brow and around the eye.
Reactivation of varicella virus years after the initial infection with chickenpox. It is marked by inflammation of the posterior root ganglia of only a few segments of the spinal or cranial peripheral nerves. A painful vesicular eruption occurs along the course of the nerve (called a dermatome) and almost always is unilateral. The trunk is the region most often affected, but the face, the groin, or the limbs may also be affected. The virus may cause meningitis or affect the optic nerve or hearing. Chickenpox (varicella zoster) virus incorporates itself into nerve cells and lies dormant there after patients recover from the initial infection. Normally, immunity is boosted by exposure to infected children; as more children are vaccinated against chickenpox, adult immunity against herpes zoster is decreased.
Herpes zoster, also known as shingles, is a nerve infection marked by a painful rash composed of tiny crusting blisters. This condition is notably prevalent among the elderly.
Herpes zoster typically impacts just one side of the body, adhering to a nerve pathway. Often, it manifests as a skin strip over the ribs, but the rash might also surface on the neck, arm, or lower body parts. On occasion, the infection extends to the face and eye, a variant known as herpes zoster ophthalmicus.
Herpes zoster is caused by the varicella-zoster virus, the same agent responsible for chickenpox. After a chickenpox outbreak, some viruses persist, remaining inactive for numerous years in the nerve cells near the spinal cord. In certain individuals, particularly the elderly, the immune system’s effectiveness can decline due to illness or extreme stress, enabling the dormant viruses to reactivate and result in herpes zoster. The condition is also prevalent among individuals whose immune systems have been weakened by stress or specific medications, including corticosteroids or anticancer drugs.
The initial sign of herpes zoster is heightened skin sensitivity, quickly succeeded by often severe pain. At this point, diagnosing the infection can be challenging, and it may be confused with other conditions. For instance, chest wall pain might be misinterpreted as angina pectoris. Approximately five days later, the rash emerges as small, elevated, red spots which swiftly morph into blisters. Over the ensuing days, these blisters dry out, flatten, and form crusts. In the subsequent two weeks, these crusts fall off, occasionally leaving behind minor pitted scars.
The most significant complication of herpes zoster is postherpetic neuralgia, a condition where pain persists after the outbreak, affecting roughly one-third of all infected individuals. This pain results from nerve damage and could endure for months or even years. Herpes zoster ophthalmicus may lead to a corneal ulcer or uveitis, which is an inflammation of a part of the eye called the uvea.
Initiating treatment promptly after the appearance of the rash, using antiviral medications like aciclovir, can mitigate symptom severity and minimize nerve damage. Pain relief drugs, or analgesics, can also be useful in managing pain. If postherpetic neuralgia persists as a complication, anticonvulsant medications like gabapentin might be beneficial.
A disruption of a spinal nerve marked by clusters of skin blisters following the path of the nerve as it emerges from the spine and encircles the body in a semi-circular pattern. When this condition affects a nerve supplying the face, there is a risk of blisters forming on the eye’s surface, potentially leading to scarring and vision loss. Herpes zoster is likely caused by the same virus responsible for chickenpox in children, and it tends to manifest in the adult population wherever chickenpox prevails in an area. A notable feature of herpes zoster is that even after the blisters have healed and the skin returns to normal, severe neuralgic pain can persist, posing significant challenges for treatment. This condition is also known as shingles.