Definition
Shingles, also called herpes zoster, gets its name from both the Latin and French words for belt or girdle and refers to girdle-like skin eruptions that may occur on the trunk of the body. The virus that causes chickenpox, the Varicella zoster virus (VSV), can become dormant in nerve cells after an episode of chickenpox and later re-emerge as shingles.
Initially, red patches of rash develop into blisters. Because the virus travels along the nerve to the skin, it can damage the nerve and cause it to become inflamed. This condition can be very painful. If the pain persists long after the rash disappears, it is known as post-herpetic neuralgia (PHN).
Description
Any individual who has had chickenpox can develop shingles. Between 600,000 and one million Americans
are diagnosed with shingles each year. Overall, approximately 20% of those who have had chickenpox as children develop shingles at some time in their lives. People of all ages—even children—can be affected, but the incidence increases with age. Newborns, bone marrow and other transplant recipients, and individuals with immune systems weakened by disease or drugs are also at increased risk. However, most individuals who develop shingles do not have any underlying malignancy or other immunosuppressive condition.
Causes & symptoms
Shingles erupts along the course of the affected nerve, producing lesions anywhere on the body. The condition may cause severe nerve pain. The most common areas to be affected are the face and trunk, which correspond to the areas where the chickenpox rash is most concentrated. There is usually a line of eruptions running from the spine along the path of the affected nerve on one side of the body.
The disease is caused by a reactivation of the chickenpox virus that has lain dormant in certain nerves following an episode of chickenpox. Exactly how or why this reactivation occurs is not clear. In 2002 clinicians pointed out that one of the causes of increasing cases of shingles was actually the success of chicken pox vaccinations. It is believed that the reactivation is triggered when the immune system becomes weakened as a result of age, stress, fatigue, certain medications, chemotherapy, or diseases such as cancer or HIV. Furthermore, in persons with HIV, shingles can be an early sign that the immune system has deteriorated.
Early signs of shingles are often vague and can easily be mistaken for other illnesses. The condition may begin with fever and malaise (a vague feeling of weakness or discomfort). Within two to four days, severe pain, itching, and numbness/tingling (paresthesias) or extreme sensitivity to touch (hyperesthesia) can develop, usually on the trunk and occasionally on the arms and legs.
Pain may be continuous or intermittent, usually lasting one to three weeks. It may occur at the time of the eruption, but can precede the eruption by days, occasionally making the diagnosis difficult.
Signs and symptoms may include the following:
itching, tingling, or severe burning pain
red patches that develop into blisters
dense clusters of small blisters that ooze and crust
swollen lymph nodes
Reflexology
Reflexology is the manipulation of the foot to bring the body into balance. Reflex points on the foot correspond to parts of the body. These points can be treated by a reflexologist or at home by following instructions on a reflex chart.