About Leprosy

In India, there are an estimated one million cases of Leprosy. While many of these cases

include patients who no longer have active Leprosy, the stigma and complications from

the disease continue to consign them to a life of deplorable conditions.

While the prevalence rate in Tamilnadu is lower than the national average, it still merits

attention in light of the dreadful nature of the disease. Studies have indicated that the

mortality rate among lepromatous patients can be four times higher than the general

population, although Leprosy itself is rarely the direct cause of death. Unlike many

other widespread diseases, Leprosy also comes attached to a social stigma.

The term leprosy originates from the Latin word lepros, meaning defilement. Due to the

deforming effects of the disease, its victims are readily identifiable by society. And even

in today's world of science and information, lepromatous patients are commonly

believed to be incurable, resulting in severe social discrimination. The lasting physical

and social effects of the disease result in double suffering by its unfortunate victims.

Old Man

Leprosy has existed for thousands of years, dating back to the earliest civilizations of

China, Egypt and India. From as early as 600 B.C. there is evidence of Chaulmoogra Oil (a

tree found in Eastern India) being used to ameliorate symptoms of the disease. Written

accounts are common in ancient literature such as the Bible, and even earlier in Susrutha,

regarded as the first Indian book on surgery, dating back to 400 B.C.

Old Painting

The cause of Leprosy was not discovered until 1873 by a Norwegian scientist named

G.H Armauer Hansen. Until that time, most experts on the subject considered leprosy to

be a hereditary disease. However, Hansen suspected its cause to be a specific,

contagious agent and, with this in mind, set out to study individual leprosy patients. He

decided to first look for variations in the blood of his patients. Finding nothing, he

moved on to examine his patients skin cells. Here, he discovered a foreign bacterium

not found in uninfected skin cells. After prolonged studies, these were found to be the

cause of Leprosy, now known as Hansen's Disease.


After Hansen's discovery, it took science over 70 years for medicine to develop a cure in a

drug known as Diamino Diphenyl Sulphone (Dapsone DDS). In 1946 Dr. Robert Cochrane

successfully treated an Indian patient with the drug by an intramuscular injection. Though

the use of Dapsone was effective in fighting Leprosy, further study showed that it had two

disadvantages: 1) prolonged use can cause anemia, and 2) it does not actually kill the

bacterium, but only stops its multiplication. Finally, the discovery of Dapsone-resistant

bacteria heightened the need for a new drug.


In the early 1960s two doctors experimenting in Nigeria found a drug named

Clofazamine to be useful in treating lepromatous patients. While the drug has none of

the disadvantages of Dapsone, it is classified as a dye and can lead to skin discoloration

as well as ocular pigmentation. While the advancement of science yielded the discovery

of more effective medicines, it also revealed various forms of the disease. It was obvious

that no one drug was totally effective against each variation. So in the 1970s medical

facilities began employing a multi-drug therapy for many of the patients. Depending on

the type of Leprosy and the progression of the disease within the patient, treatment is

currently prescribed with a combination of several possible drugs. Some of these, such

as Dapsone, Clofazamine and Thalidomide, may also be effective by themselves. Other

drugs, like Rifampicin, Ofloxacin, Minocycline and Tetracycline, must be used in



After receiving treatment for three months, a Leprosy patient is normally considered

non-infective to others. The danger of that person spreading the disease becomes null,

regardless of the stage of progression at which the disease was diagnosed and treatment

was started. If the patient has developed deformities before treatment was started, those

deformities can be corrected only by surgery. If the treatment is begun before deformities

develop, the condition can be completed cured without leaving any visible evidence on the


Old Man Smile

The cause of Leprosy is a biological agent called Mycobacterium leprae. As indicated by

the name, this bacterium resides in masses within the bodys lepra cells (in the lungs, the

liver and the nervous system) during leprous inflammatory reactions. Leprosy manifests

itself in two immunological stages: Multibacillary or Lepromatous Leprosy, which affects

the skin and organs, is at the infectious end of the scale; and Paucibacilliary or

Tuberculoid Leprosy, primarily affecting the nerves, is non-infectious. Within these two

classifications, there are also several sub-classes, which facilitate diagnosis and



Generally, one or more of the following symptoms may characterize the disease:

•Hypo-pigmented patches

•Loss of sensation in the affected areas

•Nodules or lumps in the skin located on the face and/or ears

•Ulcers located on the soles of the feet

•Loss of digits

•Nasal depression

•Paralysis or severe weakness in the muscles of the foot (Foot-drop)

•Claw toes Loss of eyelashes (Madarosis)

Old Lady

The exact method of transmission of Leprosy is not known. The M. Leprae bacterium

exits the human body through the skin and the nose. While this is conclusive, its

significance is unclear because the portal of entry into the human body remains unknown.

Research indicates that the two most viable mechanisms of entrance are the skin and the

upper respiratory tracts. However, other methods of transmission have not yet been ruled



Whatever the method of transmission, it is clear that individuals who are in close

proximity with Leprosy patients have a heightened chance of contracting the disease. Of

the different situations wherein proximity occurs (i.e. classroom, workplace, etc.),

household proximity is the most easily identifiable and yields a risk of approximately four

times higher than that of non-contacts.

A genetic component of the disease means that 95% of the general population is naturally

immune to Leprosy. Those 5% who are susceptible must be in continuous and constant

contact with a Leprosy patient to contract the disease.


Rising Star Outreach has a plan to eradicate this scourge. You can help.

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