Overview
Trichophytobezoar, also known as a hairball, is a rare condition characterized by the formation of a mass of tangled hair within the gastrointestinal tract, typically the stomach. This condition predominantly affects individuals with trichophagia, a compulsive habit of swallowing hair, often seen in patients with psychiatric disorders such as trichotillomania (hair pulling disorder) or trichophagia itself. The clinical significance lies in its potential to cause mechanical obstruction, leading to symptoms like abdominal pain, nausea, vomiting, and in severe cases, bowel obstruction. Early recognition and management are crucial to prevent complications and ensure patient safety. Understanding trichophytobezoars is essential for clinicians to promptly identify and address this often overlooked but potentially serious condition in day-to-day practice 1.Pathophysiology
Trichophytobezoars develop as a result of the ingestion and accumulation of hair within the gastrointestinal tract. At a molecular and cellular level, the keratin in hair resists degradation by digestive enzymes, leading to its accumulation and compaction over time. This accumulation can occur particularly in the stomach due to its muscular contractions and the presence of gastric acid, which initially may not sufficiently break down the keratin. As the mass grows, it can lead to mechanical obstruction, compromising gastric emptying and potentially causing ischemia or necrosis within the bezoar if pressure becomes too high. The obstruction can trigger inflammatory responses from the surrounding tissues, contributing to symptoms such as pain and nausea. The pathophysiology underscores the interplay between psychological habits and physical gastrointestinal consequences, highlighting the need for a multidisciplinary approach to management 1.Epidemiology
The incidence of trichophytobezoars is relatively low, making precise epidemiological data sparse. However, they are more commonly reported in females, particularly young adults and adolescents, reflecting the higher prevalence of trichotillomania and trichophagia in these demographics. Geographic distribution does not appear to be significantly influenced by region, suggesting a more consistent pattern across different populations. Risk factors include psychiatric conditions like trichotillomania, obsessive-compulsive disorder, and certain cultural practices involving hair ingestion. Over time, there has been a gradual increase in reported cases, possibly due to heightened awareness and improved diagnostic techniques rather than a true rise in incidence 1.Clinical Presentation
Patients with trichophytobezoars typically present with nonspecific gastrointestinal symptoms such as abdominal pain, nausea, vomiting, and early satiety. Vomiting may contain undigested food and hair, serving as a critical clue. A palpable mass in the abdomen can sometimes be detected during physical examination. Red-flag features include severe abdominal distension, signs of bowel obstruction (such as bilious vomiting, absent bowel sounds), and systemic symptoms like fever, which may indicate complications such as perforation or necrosis. Prompt recognition of these symptoms is vital to differentiate trichophytobezoars from other causes of gastrointestinal obstruction and to initiate timely intervention 1.Diagnosis
The diagnosis of trichophytobezoars often begins with a thorough clinical history focusing on hair-pulling behaviors and gastrointestinal symptoms. Imaging studies, particularly abdominal X-rays (which may show a characteristic "bezoar shadow" or "hairball sign"), and upper gastrointestinal endoscopy, are crucial for definitive diagnosis. Endoscopy allows direct visualization of the bezoar and can facilitate its removal or sampling for histopathological examination. Specific diagnostic criteria include:Differential Diagnosis:
Management
Initial Management
Refractory Cases
Complications
Prognosis & Follow-up
The prognosis for trichophytobezoar patients is generally good with prompt and appropriate management. Successful endoscopic removal often resolves symptoms and prevents complications. However, recurrence is possible, especially without addressing underlying psychological factors. Recommended follow-up includes:Special Populations
Key Recommendations
References
1 Brassington I. Body art and medical need. Journal of medical ethics 2006. link 2 Liu YY, Liu YP, Wang XP, Qiao ZH, Yu XM, Zhu YZ et al.. Bioactive daphnane diterpenes from Wikstroemia chuii with their potential anti-inflammatory effects and anti-HIV activities. Bioorganic chemistry 2020. link 3 Park KJ, Subedi L, Kim SY, Choi SU, Lee KR. Bioactive triterpenoids from twigs of Betula schmidtii. Bioorganic chemistry 2018. link 4 Manconi M, Manca ML, Caddeo C, Valenti D, Cencetti C, Diez-Sales O et al.. Nanodesign of new self-assembling core-shell gellan-transfersomes loading baicalin and in vivo evaluation of repair response in skin. Nanomedicine : nanotechnology, biology, and medicine 2018. link 5 Veldman JE. A historical vignette: red-hair medicine. ORL; journal for oto-rhino-laryngology and its related specialties 2002. link 6 Frank S. Does telesurgery fit in with the traditional Dutch legal framework?. Medicine and law 2000. link 7 Yasukawa K, Kaminaga T, Kitanaka S, Tai T, Nunoura Y, Natori S et al.. 3 beta-p-hydroxybenzoyldehydrotumulosic acid from Poria cocos, and its anti-inflammatory effect. Phytochemistry 1998. link01063-7) 8 Nukaya H, Yamashiro H, Fukazawa H, Ishida H, Tsuji K. Isolation of inhibitors of TPA-induced mouse ear edema from Hoelen, Poria cocos. Chemical & pharmaceutical bulletin 1996. link 9 Sivanandaiah KM, Gurusiddappa S, Babu VV. Synthesis and biological studies of dermorphin and its analogs substituted at positions 5 and 7. International journal of peptide and protein research 1989. link