12y old boy is suffering from headache and body pain ( especially bone )
Give him diclofenac 100mg he will be okay
Investigate for malaria parasite, tansilitis and uti
Cap Rifampicin
he best solution is to do malaria & widal test, if positive
Then you can treat malaria & typhoid with
Co- amoxiclav and arthemeter 40/240, then pcm & becombion
Go for malaria a test or it can also be osteoporosis or arthritis too .that’s my suggestion