INTRODUCTION: Currently, there is no scientific evidence about pain in the anesthetic blockage of the first finger according to the application method. However, clinical evidence has valued the use of carpule, due to the low pain it generates in the patient to the application of anesthetic. Most studies on anesthesia and pain, especially with the use of carpule and distracting methods, belong to the field of dentistry.

OBJECTIVES: It is intended to determine the pain after an anesthetic block in H of Frost in the first finger with different application methods, such as syringe and carpule. As secondary objectives, it is intended to establish the difference in pain according to the sex and age of the patients.

METHODOLOGY: Experimental, transverse and random clinical trial type analytical study, in which a sample of 200 individuals will be selected, 100 per group, which would require digital anesthesia of the first finger and that would fulfill the inclusion criteria.

Result: after the completion of the study CONCLUSIONS: After the completion of the study

Inclusion Criteria:

• Subjects over 18 years of age
• Both sexes
• Participants must present nail pathology that requires surgical intervention.

Exclusion Criteria:

• Systemic degenerative
• Neuromuscular diseases
• Pregnant or likely to be pregnant