OBJECTIVEThe purpose of this study was to observe the morphological changes of toothmarks in pocket limbs and to explore the durative development of bitemarks.

METHODSFirstly a toothmark model was established by using a universal testing machine and a self-made incisor nod which was pressed particularly on pocket limbs. The changes of toothmarks were observed on alive and dead animals with time elapsing. The scopes of bruise and inden were analyzed by soft on digital photos. The depth data of inden were collected by three dimensional laser measurement.

RESULTSThe changes in the alive group were faster than that in dead group. There was no obvious fadeaway of bruise during 24 h. The scopes of inden were decreased remarkably in 1 h, while the decrease slowed down in the following hours.

CONCLUSIONThe changes of indent are fast in pocket limb. It implies that bitemark evidence should be collected as fast as possible in cases.

No abstract available.
Bites, Human* ; Herpes Simplex* ; Humans ; Simplexvirus

Acquired perforating collagenosis (APC) is a rare dermatological condition characterized by the spontaneous eruption of skin-colored or erythematous papules or nodules that eventually ulcerate and exude collagenous material. The exact etiology of APC remains unclear, although various triggers, including infections, medications, autoimmune diseases, and trauma, have been implicated.

This case report presents a 63-year-old female with a history of diabetes who developed erythematous papules and plaques topped with thick, yellowish, hyperkeratotic, adherent crusts on the upper back following an insect bite. Histopathological examination confirmed the diagnosis of APC, characterized by a cup-shaped invagination in the epidermis containing degenerated collagen bundles and basophilic material. Masson-trichrome staining showed transepidermal elimination of the collagen fibers. Patient was initially prescribed tretinoin 0.1% cream to be applied 2x a day. However, patient was not able to apply prescribed medications. Interestingly, without any specific treatment, the patient’s symptoms gradually improved over 3 months and eventually resolved completely.

This case report highlights the spontaneous resolution of APC in a patient following an insect bite. While most cases of APC require medical intervention, this case demonstrates the potential for spontaneous healing in certain individuals. Further research is needed to understand the factors that influence the course of APC and to identify potential predictors of spontaneous resolution.

Human bite injury to the eyelid is extremely rare and poses a significant challenge in surgical reconstruction. We report an extremely rare case of human bite injury to the eyelid in a 43-year-old male with approximately 60% full thickness loss of the upper eyelid and 80% to 90% full thickness loss of the lower eyelid and its successful reconstruction using the local advancement cheek flap.
Adult ; Bites, Human* ; Cheek ; Eyelids* ; Humans ; Humans* ; Male

This is a biomechanical research in the morphological changing process of human bitemarks on the skin of dogs. The human bitemarks were made on the live and dead dogs by different tooth and occlusal force. The changing process of the bitemarks were recorded for a long time and its related morphological parameters were measured. Then multiple stepwise regression analysis was made to disclose the relationship of the shape of the bitemarks to occlusal force, time, and tooth area, tooth width and thickness. The mathematic relationship of the morphological changing process of the bitemark with occlusal force, time and tooth shape was established.
Animals ; Biomechanical Phenomena ; Bite Force ; Bites, Human ; pathology ; Dogs ; Humans

No abstract available.
Bites, Human* ; Ear* ; Humans ; Humans* ; Hyperbaric Oxygenation* ; Transplants*

Bite marks are increasingly common in violent cases such as child abuse and sex crimes. Bite marks are often the result of a suspect's attack or a victim's self-defense. Because human teeth vary in size, shape and arrangement, bite marks on objects such as skin and food are characteristic. By using this principle, forensic odontology can identify or exclude suspects by comparing actual bite marks with the teeth marks in the mouth. In this paper, the practical application of bite mark evidence, the research status and problems of bite mark analysis are briefly reviewed, and the prospect of bite mark analysis is also discussed.
Bites, Human ; Child ; Child Abuse ; Face ; Forensic Dentistry ; Humans ; Tooth

PURPOSE: To investigate the epidemiology and clinical characteristics of centipede bite injuries. METHODS: We conducted a retrospective study of clinical manifestations in patients who were identified between April 2005 to April 2007 as having suffered from centipede bites. Factors evaluated included sex, age, location and time of bite, part of body affected, clinical signs and symptoms, treatment modalities and complications. RESULTS: A total of 179 cases of centipede bite were identified. Centipede bites occurred between spring and autumn. 69.3% of bites happened at night. All patients were bitten on an exposed body parts, and the digit of both the handsand feet were the sites most often involved. Pain, swelling, erythema were the most frequent symptoms and signs. Most cases showed minor manifestations but, three patients needed to be admitted because of anaphylaxis. CONCLUSION: Centipede bites are relatively common in the summer season in rural and island areas, especially at night. Though the clinical symptoms of centipede bites are generally minor symptoms, emergency physicians need to possess accurate knowledge of the clinical manifestations in order to properly identify severe cases.
Anaphylaxis ; Arthropods ; Bites and Stings ; Emergencies ; Erythema ; Foot ; Human Body ; Humans ; Korea ; Retrospective Studies ; Seasons

When hand injuries caused by human bite are overlooked and they can progress to pyogenic arthritis. Pyogenic arthritis is difficult to treat and can make severe sequelae in the joints. We report a case of pyogenic arthritis of the hand that occurred after human bite injury in adolescent treated with wide debridement and external fixator. Our literature searches revealed that the use of external fixator is good treatment option for the treatment of pyogenic arthritis of the hand.
Adolescent* ; Arthritis* ; Bites, Human ; Debridement ; External Fixators ; Hand ; Hand Injuries ; Humans ; Joints ; Metacarpophalangeal Joint*

Animal bites are a common problem managed by primary physicians and often involve wound infection, neurovascular injury, poor cosmetic outcome, and high medical costs. During clinical assessment, a thorough medical history is acquired, including details of the bite circumstances and the patient's immune status and vaccination history. A meticulous physical examination should be performed in order to identify any injuries to deep structures, in addition to exploring the wound by creating a narrow opening and using diagnostic tools such as radiograph and ultrasound where necessary. Infection is the most problematic complication after a bite injury. Cleaning, irrigation, and debridement are the most important steps in preventing infection. The use of prophylactic antibiotics is controversial, but probably indicated in immunocompromised individuals and in anatomical areas that are more likely to be infected, such as the hand and foot. The decision to close a bite wound must be based on consideration of the benefit of a good cosmetic outcome and the increased risk of infection. In Korea, human rabies has not occurred since 2005, but the transmission of rabies is still a concern with animal bites. The transmission of viral hepatitis, herpes virus and human immunodeficiency virus can occur following human bites. To prevent the transmission of various viruses, healthcare providers should know the guidelines for post-bite exposure prophylaxis.
Animals ; Anti-Bacterial Agents ; Bites and Stings ; Bites, Human ; Debridement ; Foot ; Hand ; Health Personnel ; Hepatitis ; HIV ; Humans ; Immunization ; Korea ; Physical Examination ; Rabies ; Ultrasonography ; Vaccination* ; Wound Infection ; Wounds and Injuries