Combined Keloid Removal Treatments

Dear Doc,

I am a 29 year old female, who has suffered from keloids since I was young. I have had a sternal keloid since I had chicken pox, 20 years ago. It has grown over the years and is now approximately 5 inches in width and 2 inches in length.

I have been undergoing a combination treatment of Kenalog & Botox injections, followed by Pulsed Dye Laser. The results have been promising, but slow. I was wondering if you could advise me, the interval that should be kept between the treatment sessions? Initially my doctor in Dubai maintained a 6 weeks gap, alternating between the injections and laser, but we realized that within 3 to 4 weeks, the keloid begins to hurt, become red again and grow.

So now we are maintaining a 3-4 week gap (i.e. steroid and Botox injections now and then 3 weeks later, pulsed dye laser, and then 3 weeks later the set of injections again.) Do you think the regiment we are following is suitable? Also, Botox is quite expensive, are the results really worth the cost? And is there anything more I can do to hasten the process. Thank you for your time.