Curious as I am, after all the brouhaha over a forwarded website, I searched the web using google giving two keywords- leprosy, rajaraja. This is what I got:
Brihadeeswara Temple This magnificent Siva temple was built in 1003 AD by King Rajaraja I, the Chola King. It is considered one of the grandest temples in India. The main shrine is dedicated to Lord Siva. The story of the temple is that King Rajaraja, being unable to cure his leprosy, was instructed by his spiritual teacher to bring a Siva-linga from the Narmada River and construct a temple for it. He went and got a linga from the river and then the linga started to grow and became huge. King Rajaraja then had to build a huge temple to put it in.