Pain strikes symptoms and conditions

I found this web site while searching side effect of Singulair. My Son - 7 years old is experiencing same issue - Severe random leg pain in both legs or 1 leg as mentioned by few others. He can not walk when it happened and I have to carry him. The pain disappear in 2-3 days or sometimes it takes 5-6 days.

We did X-Ray and doc could not find anything wrong.

Others..who are facing same issue...I would appreciate if u can send me an email to ****** so that we can talk in detail.