Palmar hyperhidrosis: clinical, pathophysiological, diagnostic and therapeutic aspects

Palmar hyperhidrosis affects up to 3% of the population and inflict significant impact on quality of life. It is characterized by chronic excessive sweating, not related to the necessity of heat loss. It evolves from a localized hyperactivity of the sympathetic autonomic system and can be triggered by stressful events. In this study, the authors discuss clinical findings, pathophysiological, diagnostic and therapeutic issues (clinical and surgical) related to palmar hyperhidrosis.

Keywords:
Botulinum toxins; Cholinergic antagonists; Hyperhidrosis; Sweating; Sympathectomy; Pulsed radiofrequency treatment

Authorship

Flávio Ramalho Romero

Universidade Estadual Paulista "Júlio de Mesquita Filho" (Unesp) – Botucatu (SP), BrazilUniversidade Estadual Paulista "Júlio de Mesquita Filho"BrazilBotucatu, SP, BrazilUniversidade Estadual Paulista "Júlio de Mesquita Filho" (Unesp) – Botucatu (SP), Brazil

Gabriela Roncada Haddad

Hélio Amante Miot Mailing address: Hélio Amante Miot, Departamento de Dermatologia - Unesp - Botucatu, Distrito de Rubião Júnior, s/n, 18618-970 - Botucatu - SP Brazil. Email: heliomiot@fmb.unesp.br

Daniele Cristina Cataneo

Mailing address: Hélio Amante Miot, Departamento de Dermatologia - Unesp - Botucatu, Distrito de Rubião Júnior, s/n, 18618-970 - Botucatu - SP Brazil. Email: heliomiot@fmb.unesp.br

Conflict of interest: none

SCIMAGO INSTITUTIONS RANKINGS

Figures | Tables

Figures (6)
Tables (2)

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Figure 1
Palmar hyperhidrosis. Spont aneous sweat dripping in both hands, without relation with the need to control body temperature

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Figure 2
Scheme of the histological aspect of eccrine (A) and apocrine (B) sweat glands, and their relation to the skin structure

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Figure 3
Scheme of the sympathetic pathway of sweat control. Top left image shows the region where the hypothalamus is located, in parasagittal section of anatomical specimen (red circle). Top right image shows the relation between the brain (1) and the cervical and thoracic spinal cords (2) and lumbar (3). The blue arrow represents the location of the synapse between the first neuron and the second neuron of the pathway in Clarke's column of the thoracic spine. Lower right image is an axial section of cord, with the area of the synapse between the second and third neurons located in the ganglion of the sympathetic chain (green line). The green arrow represents the third neuron, which triggers the stimulus on the sweat glands by the acetylcholine neurotransmitter. Bottom left image shows the scheme of the histological structures of the skin and its relation with the eccrine (A) and apocrine (B) sweat glands

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Figure 4
Minor test (starch-iodine). Complexation reaction between iodine and amylose, precipitated by sweat. It allows the identification of areas of increased sweating

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Figure 5
Intraoperative image of video-assisted thoracoscopic sympathectomy (A). Scheme of the anatomical relations of the thoracic sympathetic trunk (B)

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Figure 6
Example of percutaneous thoracic sympathectomy in the T4 ganglion. A. Illustration of proper needle position, parallel to the ganglion of the thoracic chain. B. Positioning the needle in the skin for beginning of puncture. C. Anteroposterior view of fluoroscopic showing the proper position of the needle (white arrow) above the head of the rib (black arrow). D. View in profile of fluoroscopy showing the correct position of the needle (white arrow)

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Answer key Inflammasomes and dermatology. 2016;91(5):566-78. 1- A 6- B 11 - B 16 - D 2- C 7- D 12- D 17- D 3 - D 8- A 13- A 18- A 4- C 9- C 14- A 19- A 5- B 10- C 15- B 20- B

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Papers Information for all members: The EMC-D questionnaire is now available at the homepage of the Brazilian Annals of Dermatology: www.anaisdedermatologia.org.br. The deadline for completing the questionnaire is 30 days from the date of online publication.

Figure 1 Palmar hyperhidrosis. Spont aneous sweat dripping in both hands, without relation with the need to control body temperature

Figure 2 Scheme of the histological aspect of eccrine (A) and apocrine (B) sweat glands, and their relation to the skin structure

Source: Romero et al., 2015.⁶³63 Romero FR. The impact of high thoracic percutaneous simpathectomy with radiofrequency in quality of life among patients with palmar hyperhidrosis [thesis]. Botucatu (SP): Botucatu Medical School, Universidade Estadual Paulista; 2015. 127f.

Figure 3 Scheme of the sympathetic pathway of sweat control. Top left image shows the region where the hypothalamus is located, in parasagittal section of anatomical specimen (red circle). Top right image shows the relation between the brain (1) and the cervical and thoracic spinal cords (2) and lumbar (3). The blue arrow represents the location of the synapse between the first neuron and the second neuron of the pathway in Clarke's column of the thoracic spine. Lower right image is an axial section of cord, with the area of the synapse between the second and third neurons located in the ganglion of the sympathetic chain (green line). The green arrow represents the third neuron, which triggers the stimulus on the sweat glands by the acetylcholine neurotransmitter. Bottom left image shows the scheme of the histological structures of the skin and its relation with the eccrine (A) and apocrine (B) sweat glands

Figure 4 Minor test (starch-iodine). Complexation reaction between iodine and amylose, precipitated by sweat. It allows the identification of areas of increased sweating

Figure 5 Intraoperative image of video-assisted thoracoscopic sympathectomy (A). Scheme of the anatomical relations of the thoracic sympathetic trunk (B)

Figure 6 Example of percutaneous thoracic sympathectomy in the T4 ganglion. A. Illustration of proper needle position, parallel to the ganglion of the thoracic chain. B. Positioning the needle in the skin for beginning of puncture. C. Anteroposterior view of fluoroscopic showing the proper position of the needle (white arrow) above the head of the rib (black arrow). D. View in profile of fluoroscopy showing the correct position of the needle (white arrow)

Answer key Inflammasomes and dermatology. 2016;91(5):566-78.
1- A	6- B	11 - B	16 - D
2- C	7- D	12- D	17- D
3 - D	8- A	13- A	18- A
4- C	9- C	14- A	19- A
5- B	10- C	15- B	20- B

Papers
Information for all members: The EMC-D questionnaire
is now available at the homepage of the Brazilian Annals of
Dermatology: www.anaisdedermatologia.org.br. The
deadline for completing the questionnaire is 30 days from the date
of online publication.

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