Monday, May 20, 2013
Causes and treatments for lupus
Lupus is called a great imitator, because the symptoms can
mimic multiple illnesses.
An autoimmune disease, the underlying mechanism of the
disease is very complex. To complicate matters any organ in the body can be
affected by lupus.
Your immune system is your body's defense system. When
healthy, it protects the body by making antibodies (blood proteins) that attack
foreign germs and cancers. In lupus, the immune system misfires. Instead of
producing protective antibodies, an autoimmune disease begins and makes
"autoantibodies," which attack the patient's own tissues. As the
attack goes on, other immune cells join the fight. These antibodies then end up
in cells in organs, where they damage those tissues. We do not understand why
this process begins.
Lupus is predominantly a female disease. Women are affected
10 times as often as men. It is a chronic disease that can first present with
joint pain and swelling. Over the course of time skin, kidney, heart and brain
can be involved.
At our Arthritis Center we provide care to multiple patients
with lupus, ranging from 18-45 years old. The majority of patients are between
20 and 30 years old. The initial symptoms can be fever, joint aches, fatigue
and just not feeling well. Skin rashes are common — they can vary from having
a butterfly rash on the face, to a generalized rash throughout the body. The
severity of the rash can sometimes coincide with the severity of disease. Sun
exposure aggravates the disease.
Our patients can also develop mouth ulcers.
Some patients get really sick. They can have significant
kidney involvement, ranging from mild protein in the urine to at times needing
dialysis and kidney transplantation. Also lung involvement can range from
pleuritis to significant fluid around the lungs. Heart involvement can range
from fluid around the heart to involvement of the valves.
Once patients come with symptoms, and after clinical exam,
we order a whole series of tests. The lab tests help us differentiate the cause
and severity of the illness. We also do X-rays and sometimes echocardiograms.
Some of our patients also need kidney biopsies.
The treatment is based on the severity of the underlying
disease. Some patients may need prednisone for the management of their illness
and others may need powerful chemotherapeutic agents. Recently a new medication
was approved — Benlysta.
Given the chronic nature of the illness, we have to monitor
our patients closely. They can have flare-ups and are at risk for heart disease. To manage our patients
we have to coordinate care with multiple specialists. Education and
coordination of care can lead to better outcomes.
Sandeep Varma, MD, is the Medical Director of the Backus Hospital Arthritis Center. To comment on this column or others, visit the Healthy
Living blog at www.backushospital.org/backus-blogs or e-mail Dr. Varma or any of the Healthy Living columnists at healthyliving@wwbh.org.