as per the description he is case of VATA-PITAJ ROGA. second the child is 4 years so require his cooperation also.1 ABHAYA  MADHU -the powder of HARITIKI MACERATED WITH HONEY is very effective application.2  khiri briksha kashay  tvak kashay — the decoction of the bark of  milky trees such as VATA, UDAMBARA, PIPALA, PLAKSHA (TREES OF fICUS SPECIES ) IS VERY EFFICACIOUS GARGLE.