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Updated: May 16, 2026

Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia
Published on: January 27, 2018
Pressure alopecia
1Betsi Cadwaladr University Health Board, Denbighshire, UK.
Insights
Postoperative alopecia (PA) is a rare condition causing hair loss after surgery or intensive care. Early detection and head repositioning can prevent permanent hair loss and psychological distress.
Area of Science:
- Dermatology
- Surgical Complications
- Hair Loss Disorders
Background:
- Postoperative or pressure alopecia (PA) is an infrequently reported condition.
- It is associated with head immobilization during surgery or prolonged intensive care unit stays.
- PA can be considered analogous to a healed pressure ulcer.
Purpose of the Study:
- To review and summarize published cases of postoperative or pressure alopecia.
- To analyze its occurrence in pediatric and various surgical contexts (cardiac, gynecological, abdominal, facial).
- To highlight clinical manifestations, potential sequelae, and preventive strategies.
Main Methods:
- Systematic review of published literature on postoperative or pressure alopecia.
- Analysis of case reports and series across different surgical specialties and age groups.
- Synthesis of clinical presentations, management, and outcomes.
Main Results:
- PA presents as scarring or non-scarring alopecia.
- Manifestations include scalp swelling, tenderness, ulceration, or delayed alopecia with a history of immobilization.
- The condition can lead to significant long-term psychological distress.
Conclusions:
- Regular head turning and vigilance are recommended for prophylaxis against permanent alopecia.
- Further multi-center studies in high-risk patients are needed to elucidate the etiology of PA.
- Early recognition and intervention are crucial to mitigate the impact of PA.
Abstract:
Postoperative or pressure alopecia (PA) is an infrequently reported group of scarring and non-scarring alopecias. It has been reported after immobilization of the head during surgery and following prolonged stays on intensive care units, and may be analogous to a healed pressure ulcer. This review presents a summary of cases published in pediatrics and after cardiac, gynecological, abdominal and facial surgeries. PA may manifest as swelling, tenderness, and ulceration of the scalp in the first few postoperative days; in other cases, the alopecia may be the presenting feature with a history of scalp immobilization in the previous four weeks. The condition may cause considerable psychological distress in the long term. Regular head turning schedules and vigilance for the condition should be used as prophylaxis to prevent permanent alopecia. A multi-center study in high-risk patients would be beneficial to shed further light on the etiology of the condition.
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