Autocannibalism (Disease): Causes, Symptoms and Treatment

Autocannibalism is a rare and complex psychological and medical phenomenon that refers to the compulsive act of biting, chewing, or eating parts of one’s own body. Although it may sound like a term from horror fiction, autocannibalism is a real and distressing condition that intersects psychiatry, neurology, and dermatology. It can manifest in different ways, from mild skin picking and biting to severe self-mutilation involving flesh or even deeper tissues.

Understanding what causes autocannibalism, how it presents in individuals, and what treatment options exist is essential for mental health professionals, caregivers, and anyone affected by or concerned about this condition. This article explores the causes, symptoms, and treatment strategies surrounding autocannibalism, shedding light on this often misunderstood disorder.

What Is Autocannibalism?

Autocannibalism, also known as self-cannibalism, describes behaviors where individuals consume parts of their own bodies. These acts can include:

• Biting or chewing the skin or flesh
• Eating hair (trichophagy, often related)
• Pulling and swallowing nails or nails beds
• Ingesting one’s own blood or flesh

This behavior can be episodic or chronic, voluntary or driven by irresistible urges. While it’s most commonly seen in individuals with certain psychiatric or neurological disorders, it may also occur in extreme survival situations (though that is outside the clinical scope).

In what contexts does autocannibalism appear?

Like other types of self-injurious behavior, this type of behavior is usually linked to the presence of severe cognitive and perceptual alterations. Subjects who practice them tend to have alterations in consciousness or diminished cognitive capacity.

Some of the cases detected are usually linked to serious cases of disorders that cause a deterioration in cognitive capacity and consciousness itself. In situations that produce a high level of activation, agitation and impulsivity in the subject, self-harming behaviors occasionally appear (including self-cannibalism in the form of self-biting), generally as a mechanism to control anguish and internal tension.

It sometimes occurs in individuals with intellectual disabilities, some severe cases of neurodevelopmental disorders (self-harm has occurred in some cases of autism). Likewise, autocannibalism can occur during psychotic breaks or in people who suffer from intoxication by psychodysleptic substances (hallucinogens, for example) or psychoanaleptic substances (exciting substances).

These behaviors have also been observed as a method of calming in some withdrawal syndromes. There have even been cases in some personality disorders, such as borderline personality.

Finally, this type of behavior has been observed in some subjects who link self-harm and consumption of their own body to sexual pleasure, resulting from sadomasochistic paraphilias. An example of this is found in the case of the Rottemburg cannibal, whose victim agreed to eat parts of his body before being devoured.

Causes of Autocannibalism

Autocannibalism rarely occurs in isolation. Instead, it is typically a symptom or manifestation of underlying conditions. The causes can be broadly grouped into psychological, neurological, and medical categories:

1. Psychiatric Disorders

Many cases of autocannibalism are linked to mental health conditions, including:

• Obsessive-Compulsive Disorder (OCD): Compulsive urges to bite or chew skin may be part of a larger pattern of repetitive, uncontrollable behaviors.
• Psychotic Disorders: Schizophrenia or other psychoses can sometimes manifest in self-harm behaviors including autocannibalism, especially if patients experience delusions or hallucinations commanding them to harm themselves.
• Body-Focused Repetitive Behaviors (BFRBs): These include conditions like dermatillomania (skin picking disorder) and trichotillomania (hair pulling), which can lead to biting or eating of one’s own body parts.
• Personality Disorders: Some individuals with borderline or antisocial personality disorders may engage in self-harm including autocannibalism.
• Severe Depression or Anxiety: In extreme distress, some people might resort to self-mutilation behaviors.

2. Neurological Conditions

Certain neurological diseases can provoke behaviors resembling autocannibalism, such as:

• Lesch-Nyhan Syndrome: A rare genetic disorder causing self-mutilating behaviors including lip and finger biting, sometimes resulting in actual tissue consumption.
• Autism Spectrum Disorder (ASD): Some individuals with ASD and intellectual disabilities may engage in self-injurious behaviors including biting.
• Dementia and Neurodegenerative Diseases: In advanced stages, some patients lose inhibition or awareness and may bite or chew parts of themselves.

3. Substance Use and Withdrawal

Drug abuse, particularly of stimulants like methamphetamine or cocaine, may lead to intense psychomotor agitation and self-harming behaviors. In some cases, these may include biting or chewing the skin or flesh.

4. Medical Conditions

Certain medical or dermatological conditions causing severe itching, pain, or abnormal sensations can provoke patients to bite or chew their skin compulsively.

Lesch-Nyhan Syndrome

In addition to appearing in situations and disorders such as those mentioned above, there is a medical syndrome in which acts of autocannibalism are relatively frequent, which has earned it the popular name of the disease of autocannibalism. This is Lesch-Nyhan syndrome.

This disorder of genetic origin, linked to a defect in a recessive gene on the X chromosome, causes the enzyme hypoxanthine-guanine-phosphoribosyl-transferase. It tends to cause hyperproduction of uric acid, neurological dysfunctions that usually cause intellectual disability and behavioral alterations.

Within these behavioral alterations, the presence of constant self-injury stands out, including acts of autocannibalism focused on biting parts of the body that they can reach, especially fingers and lips. It appears only in men, although women can be carriers and transmit it to their offspring.

Symptoms and Signs of Autocannibalism

The clinical presentation of autocannibalism varies widely depending on the severity and underlying cause. Common signs and symptoms include:

Physical Symptoms

• Visible bite marks, wounds, or lesions on the lips, hands, fingers, arms, or other body parts.
• Ulcers or sores resulting from repeated biting or chewing.
• Infection at sites of self-inflicted wounds, sometimes leading to abscesses or systemic infection.
• Scarring or tissue damage from chronic self-cannibalism.
• Loss of nails or nail beds from biting or chewing.

Behavioral Symptoms

• Repetitive or compulsive biting or chewing behaviors.
• Signs of distress, anxiety, or agitation before or after the behavior.
• Attempts to hide or conceal wounds.
• Social withdrawal or embarrassment related to visible injuries.
• In some cases, lack of awareness or denial of the behavior.

Psychological Symptoms

• Presence of obsessions or compulsions if related to OCD.
• Symptoms of psychosis such as hallucinations or delusions prompting self-harm.
• Signs of depression, anxiety, or emotional distress.
• Evidence of impulse control difficulties.

Diagnosis of Autocannibalism

Diagnosing autocannibalism involves a thorough clinical evaluation including:

• Medical history and physical examination focusing on wounds and behavioral patterns.
• Psychiatric assessment to identify underlying mental health disorders.
• Neurological evaluation if a neurodegenerative or genetic condition is suspected.
• Laboratory tests or imaging if infections or other complications are present.

Early diagnosis is critical because untreated autocannibalism can lead to serious infections, permanent tissue damage, and profound psychological distress.

Treatment Approaches for Autocannibalism

Taking into account that these are symptoms rather than a disorder itself, the treatment of autocannibalism will often be linked to the type of problem that causes it. It is necessary to take into account the reason why the self-harm is carried out and the degree of consciousness of the individual who carries it out at the time of doing it.

On a psychological level, the use of different behavior modification techniques can be useful. One of the techniques used to treat self-harming behaviors such as autocannibalism is dialectical behavioral therapy, through which it seeks to modify behavior while trying to get the subject to change the type of relationship they maintain with the condition that causes this type of behavior.

Other types of therapies, such as conditioning in the form of reinforcement by emitting incompatible behaviors, could be helpful in varying the type of behavior in cases where autocannibalism is a response to anxiety-inducing situations.

If the autocannibal act occurs for sexual reasons the use of techniques focused on redirecting the desire toward another type of stimulation and reducing the attractiveness of autocannibal behavior may be indicated. Although it is not a type of treatment that is generally recommended, in very serious cases aversive chemical techniques may be applied, which cause the subject to reject the act of self-harm and attempt to consume their own meat.

If, for example, the self-cannibal practice is derived from substance consumption or a psychotic outbreak, treatment must first be aimed at controlling the outbreak or intoxication in question and reducing its symptoms.

Autocannibalism is a rare and complex psychological and medical phenomenon that refers to the compulsive act of biting, chewing, or eating parts of one’s own body. Although it may sound like a term from horror fiction, autocannibalism is a real and distressing condition that intersects psychiatry, neurology, and dermatology. It can manifest in different ways, from mild skin picking and biting to severe self-mutilation involving flesh or even deeper tissues.

Understanding what causes autocannibalism, how it presents in individuals, and what treatment options exist is essential for mental health professionals, caregivers, and anyone affected by or concerned about this condition. This article explores the causes, symptoms, and treatment strategies surrounding autocannibalism, shedding light on this often misunderstood disorder.

Treating autocannibalism requires a multidisciplinary approach addressing both the behavior and the underlying causes. Here are the main treatment strategies:

1. Psychotherapy

• Cognitive Behavioral Therapy (CBT): Particularly effective for patients with OCD or BFRBs, CBT helps patients identify triggers, manage compulsions, and develop healthier coping mechanisms.
• Dialectical Behavior Therapy (DBT): Often used for patients with borderline personality disorder or severe emotional dysregulation, DBT teaches emotional regulation and distress tolerance skills.
• Behavioral interventions: Habit reversal training (HRT) is useful for reducing repetitive self-injurious behaviors.

2. Medications

• Selective Serotonin Reuptake Inhibitors (SSRIs): Commonly prescribed to reduce compulsive behaviors in OCD or anxiety disorders.
• Antipsychotics: Used in psychotic disorders or severe behavioral dysregulation.
• Mood stabilizers: May help in borderline personality or mood disorders.
• Pain relief and antibiotics: For wounds or infections resulting from self-biting.

3. Medical and Surgical Care

• Wound care to prevent and treat infections.
• In severe cases, surgical intervention may be necessary to repair damaged tissue or prevent further harm.
• Use of physical barriers (like gloves or bandages) to prevent biting or chewing.

4. Supportive Care

• Family and caregiver education to foster understanding and support.
• Environmental modifications to reduce triggers.
• Close monitoring in severe cases, possibly including inpatient psychiatric care.

Prognosis and Challenges

The outcome for individuals with autocannibalism depends heavily on the underlying diagnosis and the timeliness of intervention. With appropriate treatment, many can reduce or eliminate self-harming behaviors. However, chronic cases associated with neurological or severe psychiatric disorders may persist and require lifelong management.

One major challenge is the stigma and shame often associated with these behaviors, which can delay help-seeking and complicate treatment.

FAQs About Autocannibalism (Disease): Causes, Symptoms and Treatment

What causes autocannibalism?

Autocannibalism is usually caused by underlying psychiatric disorders such as OCD or psychosis, neurological conditions like Lesch-Nyhan syndrome, substance abuse, or severe emotional distress.

Is autocannibalism the same as self-harm?

Autocannibalism is a form of self-harm, but it specifically involves biting, chewing, or eating parts of one’s own body, which is rarer and more severe than typical self-injury behaviors.

How is autocannibalism treated?

Treatment typically involves psychotherapy (like CBT or DBT), medications to manage underlying conditions, wound care, and sometimes physical barriers to prevent injury.

Can autocannibalism lead to serious health problems?

Yes. Repeated biting or chewing can cause infections, tissue damage, scarring, and in severe cases, disability or systemic illness.

Is autocannibalism curable?

It can often be managed effectively, especially when underlying causes are treated early. However, some cases require ongoing care and support.