Nerve surgery or sympathectomy
Sympathectomy is a nerve surgery that is only recommended for severe cases of excessive sweating. Because this is a major surgery, it is used as a last resort after you have tried other options unsuccessfully. Your surgeon will cut, clamp, or burn spinal nerves [8] that send signals to your sweat glands in your hands. This may trigger more sweating in other parts of your body.
During this procedure, your surgeon will insert [9] a mini surgical camera into your chest near your underarm and use it to locate the nerves. Your lungs must collapse your lungs for a while so your surgeon can cut the nerves.
This surgery is used to stop palm sweating. Variations of this procedure may be used to treat facial sweating, but not the feet. Using this procedure to stop sweating in the feet can lead to irreversible sexual dysfunction.
Conclusion
Hyperhidrosis can affect your self-confidence terribly. In most cases, you should be able to manage it with antiperspirants or creams. If you still sweat excessively, see a doctor to recommend more effective treatments.
References
[1] https://www.mayoclinic.org/diseases-conditions/hyperhidrosis/diagnosis-treatment/drc-20367173
[2] https://www.mayoclinic.org/diseases-conditions/hyperhidrosis/diagnosis-treatment/drc-20367173
[3] https://www.aad.org/public/diseases/a-z/hyperhidrosis-treatment
[4] https://www.mayoclinic.org/diseases-conditions/hyperhidrosis/diagnosis-treatment/drc-20367173
[5] https://www.mayoclinic.org/diseases-conditions/hyperhidrosis/diagnosis-treatment/drc-20367173
[6] https://www.mayoclinic.org/diseases-conditions/hyperhidrosis/diagnosis-treatment/drc-20367173
[7] https://www.aad.org/public/diseases/a-z/hyperhidrosis-treatment
[8] https://www.mayoclinic.org/diseases-conditions/hyperhidrosis/diagnosis-treatment/drc-20367173
[9] https://www.aad.org/public/diseases/a-z/hyperhidrosis-treatment