Hi Muhana, Wow, rickets - not often heard about down under. My first thought would be - get the kid into the sun, make sure they have vitamin D and calcium supplementation. If you are wanting to apply ultraviolet radiation to the child via a lamp, please seek advice from someone who has done it before - you need to be able to calculate the E1 of the child, then determine the correct time/distance of lamp from child to apply the treatment safely. Overdosage could result in severe burns. All the best to you, and your patient.