The purpose of this study is to describe two safe and reproducible techniques for the treatment of hyperhidrosis using botulinum toxin. The same patient will receive two different injection technique in each armpit and will be evaluated subjectively and objectively.

The abobotulinumtoxinA (ABO) will be used in all patients. The ABO will be prepared by adding 4 cc of normal saline to a 500-unit Dysport© (Ipsen Ltd, Berks, UK) vial Preinjection patient pictures will be taken showing the technique used for each armpit.

Injection technique:

1. Technique 1 The Quadrant technique: 5 vertical lines and 5 horizontal lines will be draw on the hair bearing area of the armpit amounting to 25 injection points being more concentrated on the center. Each injection consists of 5Units of abobotulinum
2. Technique 2 the six injection technique: will consist on 6 injections in the hair bearing area equally spaced with each consisting of 8units

Follow up will be done at 15 days for post injection pictures with iodine starch test A total of 15 male patients will be recruited. And the injection for each armpit in a given patient is randomized.

Inclusion Criteria:

Consecutive 15 male patients presenting to our clinic for primary localized hyperhidrosis will be included in this study

Exclusion Criteria:

• Patient that has received a botulinum injection in the past year

Patient that had a liposuction in the armpit or laser for the hair

Patients with preexisting neuromuscular conditions (myasthenia gravis, Eaton Lambert syndrome) Patients using medication that could potentiate the effect of botulinum (ex: aminoglycoside antibiotics) Patients with sensitivity to botulinum toxin or human albumin

the objective assessment with iodine starch test