Abstract
BackgroundLaser hair removal is an effective and safe method for the permanent reduction of unwanted hair. Common side effects include temporary pain, transient erythema, and perifollicular edema. Purpuric eruption is a rare adverse event.Case presentationTo the best of our knowledge, this is the second case report of purpura induced by laser hair removal. Our patient is a 50-year-old woman of Arab origin. Her positive reaction to a laser hair removal provocation test helped in the diagnosis; her condition was managed with an orally administered corticosteroid, leading to complete resolution within 5 days.ConclusionPurpura induced by laser hair removal is a self-limiting and unusual side effect; physicians’ awareness of such adverse events can help them to avoid unnecessary investigations and provide guidance for better management.
Highlights
Laser hair removal is an effective and safe method for the permanent reduction of unwanted hair
Laser hair removal (LHR) is a safe modality, and common side effects include temporary pain, transient erythema, and perifollicular edema; these adverse events depend on variable factors such as skin type, treatment site, laser system, parameter set, and operator knowledge [4]
DCD dynamic cooling device, LN liquid nitrogen, NA not applicable, ND:YAG neodymium-doped yttrium aluminum garnet unusual side effect occurring in 7% of cases using LHR devices; it is more common for patients with darker skin types and for treatments on the extremities [7]
Summary
Laser hair removal (LHR) has become a popular modality for the removal of unwanted hair; it is typically performed or supervised by laser-trained dermatologists, and it is the most requested cosmetic procedure in the world [1]. A clinical examination showed multiple round, nonblanching erythematous papules on both of her thighs and legs She was vitally stable and had no systemic symptoms. Basic laboratory screenings (complete blood count, prothrombin time, partial thromboplastin time, and international normalized ratio) were unremarkable, and workups for connective tissue diseases, cryoglobulinemia, and infectious etiologies were all negative. She declined a skin biopsy but agreed to less invasive provocation testing (Table 1) on her uninvolved right forearm at a lower parameter setting. At a follow up 5 days later, she showed complete resolution of her symptoms
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