If your child's Scabies symptoms have worsened after treatment with Gamma Benzene Hexachloride and Crotamiton lotions, it may be due to incomplete treatment, reinfection from close contacts, or the medicine not working effectively. It is important that all family members are checked and treated if necessary, and that clothes, towels, and bed sheets are washed in hot water and dried well to prevent reinfection. You should follow up with the dermatologist so they can reassess the condition and prescribe the most appropriate treatment for your child.