What are Trichobezoars?
Trichobezoars are most frequently observed in females and are associated with a psychiatric disorder, such as trichotillomania that involves an urge to pull one’s hair out and consume it. Human hair is difficult to digest due to its resistance to digestive enzymes. The hair gets caught and mixed with mucus and food within the folds of the stomach to form a compacted oval mass or a hairball. Trichobezoars develop very slowly and sometimes may take many years to develop.
What are the Causes of Trichobezoars?Trichobezoar or an indigestible hair mass in the abdomen results from the accidental or involuntary ingestion of hair. One of the main causes of trichobezoars is the psychiatric condition of trichotillomania. In trichotillomania, the individual involuntarily or unconsciously has an irrepressible urge to pull out his/her hair before swallowing it. Other psychiatric disorders that can cause trichobezoars are obsessive compulsive disorders anorexia, pica, and depression. Gastric surgery, e.g. gastroenterostomy and bariatric surgery is one of the predisposing conditions to trichobezoars.
What are the Symptoms and Signs of Trichobezoars?In many cases, when the mass is small, a trichobezoar may not be identified due to the lack of symptoms. The initial symptoms of trichobezoar may include loss of appetite and nausea. When the trichobezoar is significant in size, it can cause obstructive symptoms. Also, due to the pressure it exerts, it can reduce blood supply to the stomach and intestine resulting in ulcers and perforation of these organs. Jaundice and pancreatitis can occur as complications. Some of the symptoms caused by trichobezoars are as follows:
- Exhaustion or fatigue
- Stomach pain
- Bad breath
- Black tarry stools due to bleeding
- Discomfort in the chest
- Patchy loss of hair, which may be indicative of trichotillomania
- Dizzy feeling
- Constipation or diarrhea
- Loss of weight
The severity of symptoms depends on the seriousness of the condition. For example, a patient with perforation may be in shock due to loss of blood.
How are Trichobezoars diagnosed?Trichobezoar may be suspected based on history and clinical examination of the patient. A mass may be felt over the abdomen on physical examination.
- Trichobezoars are linked to psychiatric disorders and hence clinical assessments are necessary to understand the possibility of the presence of hairballs.
- Radiological tests include gastrointestinal endoscopy, ultrasonography, x-ray of the abdomen, and computed tomography of the abdomen. Computed tomography scans of the abdomen are extremely accurate and are therefore preferred in the diagnosis of trichobezoar. If an individual has suffered from trichobezoars in the past, it is recommended that he/she get a scan done twice a year to detect any recurrence.
How are Trichobezoars treated?Surgery is the preferred choice of treatment since medications are ineffective in dissolving a trichobezoar.
There are 3 main surgical ways to treat trichobezoars:
Laparotomy or Open Surgery: This is a favorable form of treating trichobezoars. The procedure is low in complications and can detect any secondary masses in the abdomen or intestine. This is the only form of treatment for Rapunzel syndrome.
Laparoscopy: Nirasawa and colleagues first described this form of treatment for bezoars in 1998. Laparoscopy or keyhole surgery is normally combined with endoscopy. While laparoscopy is used to fragment the hairball, endoscopy is utilized to remove the fragments. Complications are minimal with this procedure and patients are discharged quickly. However, laparoscopy takes a longer time as compared to open surgery.
Endoscopy: Endoscopy is not a preferred method to treat trichobezoar though it may be used for diagnosis or in combination with laparoscopy.