lupus has numerous causes but affects mainly women (9 women for every man) during child-bearing years – usually between 20 and 40.
its prevalence is variable from one country to another, ranging from 15 to 50 cases for every 100 000 people.
lupus patients often suffer unpredictable bouts of the disease, called flares, followed by periods of remission.
of the two forms of lupus, the relatively benign and the more frequent one involves skin rashes – appearing mainly on the face and scalp – and joints, especially in the small joints of the hands and in the knees.
the second more rare and severe form affects internal organs, most often harming kidneys, heart, lungs, blood vessels and the brain.
sle can be fatal, but its prognosis, which depends on the degree and nature of organ involvement – resulting in renal and vascular damage – has dramatically changed in the past 50 years.
indeed, the five-year survival rate, which was less than half the number of sufferers in 1955, is currently over 90%. however, the death rate among lupus patients remains four times higher than the general population of the same age.
the two leading causes of death are kidney damage and infections in the first five years, and vascular damage and infectious complications after that.
hidden grain of truth
the most likely reason for lupus being used as a joke in house is because of the difficulty in delivering a diagnosis of the disease.
initial and chronic lupus symptoms mimic the symptoms of several other diseases, leading to misdiagnoses and making lupus extremely challenging to diagnose.
as lupus symptoms vary widely and come and go unpredictably, diagnosis is usually based on detailed clinical examination and adapted laboratory tests. these latter include
anti-dsdna or anti-sm antibodies, which are characteristic of and specific to the disease.