Sweating is a physiological phenomenon of our body regulated by the autonomic nervous system. When it occurs excessively in certain areas of the body, it is referred to as hyperhidrosis.
Hyperhidrosis can be primary or secondary: the primary form is the most common, and its cause is unknown, often triggered by emotional factors. The secondary form is associated with certain diseases or organ dysfunctions (such as obesity, infections, malignant neoplasms, thyroid disorders, diabetes mellitus, and other endocrine diseases) or neurological problems.
Hyperhidrosis most commonly affects the hands (palmar hyperhidrosis), but it can also occur in other areas of the body such as the armpits or feet. The degree of sweating can vary and can be severe, sometimes leading to dripping sweat. In some cases, the sweating can be particularly odorous, and this is referred to as bromhidrosis.
From a relational perspective, hyperhidrosis can be embarrassing and has a psychological impact, especially in severe cases. The condition typically begins in adolescence and tends to persist throughout life, negatively affecting social interactions.
Hyperhidrosis is often treated with topical antiperspirants containing aluminum chloride, but the results are not always satisfactory. Botulinum toxin, which has been used for this purpose for several years now, can reduce excessive sweating by inhibiting sweat glands. The treatment has no contraindications or side effects: the toxin is injected subcutaneously through micro-injections spaced about 1.5 cm apart on the palms of the hands, soles of the feet, or in the armpit area, sometimes using local anesthesia. The effect becomes apparent within two or three days and lasts for several months before gradually wearing off. On average, however, the inhibition of sweat glands persists for about 8 months; when the effect wears off, the treatment can be repeated.