[Avodah] Medicine for a Metzora

[SBA]

Anyone know if a Metzora is allowed to seek medical attention and/or take
medication for his symptoms?

Or would that come under "Hishomeir benega hatzoraas"?
------------------
After writing this I found an article on this subject by a Prof Shaul Regev
(no idea of his background) on the Bar Ilan U site which mentions this
subject and brings various shittos re tzoraas if it is a medical or
spiritual machla.
http://www.biu.ac.il/JH/Parasha/metzorah/reg.html
Anyone know of other sources?


Another question. 
It seems clear that in those days, a person speaking Loshon Hara, Motzi Shem
Ra etc would end up becoming a Metzora. 

So which normal bar-daas wouldn't refrain from LH, knowing that he'll get
on-the-spot punishment? 

SBA