Last year in May, he was having episodes of severe headache and we went for series of scan. Everything looks normal.
So after couple of days, the neurologist decided to do a lumbar puncture and the reading was showing quite high pressure of 45+ i believe, and at that time they brought the pressure down.
After the LP neurosurgeon think it was a shunt failure or he might develop an IIH but he also not sure because usually people who have shunt will develop an IIH.
At that time we didn't do anything with the shunt and so far so good until now.

Paediatrician said that the headache is because of viral infection because the blood test and abdomen scan showing a hint of viral infection although is not very significant sign.

The reason i am thinking about shunt independence is that why the pressure could be so high at the time of the LP, if the shunt blocked, then logically after the LP, he would having another series of headache again.