Medical treatment for excessive sweating through the application of botulinum toxin type A in specific areas (underarms, palms, soles, forehead). The toxin temporarily blocks the release of acetylcholine, a neurotransmitter that stimulates sweat glands, significantly reducing sweat production in the treated area. The procedure is minimally invasive, consisting of multiple superficial microinjections distributed throughout the affected area. Results are notable after 2-7 days and can last between 6-12 months, providing a substantial improvement in the quality of life for those who suffer from excessive sweating.