This mysterious disease makes people laugh even when nothing is funny

[ahlam1399]

http://img-s-msn-com.akamaized.net/tenant/amp/entityid/AAoSwFE.img?h=100&w=100&m=6&q=60&o=f&l=f&x=500&y=180A good cry can do wonders for the body and mind. Same with a good laugh. But what if you had no control over whether you laughed or cried?

أكثر... (http://www.msn.com/en-in/health/medical/this-mysterious-disease-makes-people-laugh-even-when-nothing-is-funny/ar-AAoXWzT?srcref=rss)