After analysing the chart of your son, we can say that he has a good luck factor supporting him always and he would come out of all sorts of issues including those related to health.
Also the current ongoing time is supportive which suggests he would get relief from medicines prescribed by a professional medical practitioner. His pain and troubles would get subsided in few days.
Best Wishes.
Leo ascendant with ascendant lord Sun posited in the eleventh house conjunct retrograde Mercury and twelfth lord Moon; Jupiter exalted in the twelfth house and Saturn exalted and retrograde in the third house conjunct South Node (Ketu); Currently Jupiter Major period is ongoing with Saturn Sub Period and Mercury Sub Sub Period.