Thanks for the query to H.C.M. Forum.
Since your child is just 10 months old (9 & 1/2 months) ,no chance due to any eyes sight.
The cause of concern is pain in the shoulder joint .
Once there was shoulder joint pain and after gel become alright ,if reoccurs then consult an orthopaedcian and get his opinion.
The sore throat
may be responsible for all these symptoms .
As you child is taking montair LC ( monteleykast + levocetrizine ) ,this combination is most potent anti allergic .
In my opinion your child may have bronchoconstriction
added with infection.
This may be allergic bronchitis
so consult physician and get his opinion as physical examination will find out whether wheezing
present or not present.