**11. Conclusion**

The objective of the research work is to analyze trace elements present in selected medicinal plants using ED-XRF spectrometer and to estimate their elemental concentrations.

All four plants contain trace elements of different concentrations in medicinal plants selected for this study. It is believed that the various trace elements present in the plants play an important role in the management of skin diseases. The difference in the concentrations of these elements is mainly due to the differences in structure, as well as type of the soil, the cultivated field, age of the plant, climatic conditions, and irrigation facilities provided to the plants. The conventional treatment of dermal disease has many side effects, on the other hand, medicinal plant extracts are possesses similar therapeutic efficacy without any side effects. The present information will be helpful to prescribe the type of extract, dose, and mixture of these plants. The results justify that usage of these plants in traditional systems of medicine for the treatment of skin diseases contains the appropriate amount of Fe, Zn, Cu etc.

However, further research is needed to understand the relation between dermal diseases and trace elements. Finally, the study concluded that this information will be very beneficial for the researcher who would like to conduct research in the area of Herbal medicines. Also, it has been found that no excess quantities of toxic elements are present in selected medicinal plants and not harmful to health.
