Microwave Ablation in Mild Axillary Hidradenitis Suppurativa

Inclusion Criteria: * Adult (≥ 18 years of age) male or female patients with mild HS and able to participate, willing to give written informed consent and to comply with the study restrictions; * Minimum of 3 AN-count located in each axilla; * Maximum of 5 AN-count located in each axilla. Exclusion Criteria: * Patients with \>1 abscesses or draining fistulas per axillary region; * AN-count ≥ 5 in other regions than the axillary area; * Any current and / or recurrent clinically significant skin condition in the treatment area other than HS; * Surgical scars covering more than 25% of each individual axillary area; * Open surgical wound(s) in the axillary areas prior to randomization; * Use of anti-inflammatory or immunomodulatory medication (intralesional corticosteroids, oral antibiotics, biologics, prednisone) within 2 weeks prior to randomization; * Contraindication for miraDry therapy; * Heart pacemakers and other electronic device implants; * Supplemental oxygen; * Resistance to or history of intolerance of local anesthesia including lidocaine and epinephrine; * Previous use of miraDry therapy or MWA in the axillary area; * Previous use of successful laser or light therapy for hair removal in the axillary area; * Use of botulinum toxin injections 6 months prior to randomization; * Use of aluminiumhydroxychloride 1 month prior to randomization; * Pregnant or lactating women at randomization.