There are more bands named Asthenia.

1.
Asthenia was a Dutch symphonic gothic-metal band.

2.
Asthenia is also the name of a band from ehm... France I guess.
But, nobody really knows them so no description here...

3.
Asthenia is a band from Linköping, Sweden. http://www.myspace.com/astheniaswe

4.
Asthenia is an emotive hardcore band from Tokyo, Japan. http://astheniatokyo.bandcamp.com/

5.
Asthenia (虚症) is also a Chinese Post-Black Metal/Shoegaze band. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.