Related Experiment Videos

Necrotizing fasciitis

Virendra N Sehgal1, Naresh Sehgal, Ruchi Sehgal

  • 1Dermato-Venereology (Skin/VD) Centre, Sehgal Nursing Home, Panchwati, Azadpur, Delhi, India. drsehgal@ndf.vsnl.net.in

Insights

Necrotizing fasciitis, a severe deep fascia infection, presents with pain, gas in tissue, and foul odor. Prompt debridement and supportive care led to a positive outcome in a recent case.

Area of Science:

  • Infectious Diseases
  • Surgical Pathology

Background:

  • Necrotizing fasciitis is a rare, aggressive soft tissue infection primarily involving deep fascia.
  • It can rapidly progress to subcutaneous tissue, fascia, and muscle necrosis.
  • Early recognition and intervention are critical for patient outcomes.

Observation:

  • A patient presented with excruciating pain, palpable gas in tissues, and a foul odor in the left buttock and thigh.
  • Physical examination revealed erythema, induration, patchy necrosis, and sensory loss.
  • Symptoms likely followed minor trauma to the affected area.

Findings:

  • Microscopic pathology confirmed the diagnosis of necrotizing fasciitis.
  • The clinical presentation included cardinal signs of the infection.
  • The patient received surgical debridement and intensive supportive therapy.

Implications:

  • This case highlights the importance of recognizing the characteristic signs of necrotizing fasciitis.
  • Aggressive surgical management combined with antibiotics, analgesics, and fluids can lead to favorable outcomes.
  • Prompt diagnosis and treatment are essential to prevent severe morbidity and mortality associated with this infection.

Related Concept Videos

Cellular Injury IV: Necrosis01:16

Cellular Injury IV: Necrosis

Necrosis is a form of irreversible cell death caused by severe injury such as ischemia, toxins, or trauma. Unlike programmed cell death, it is an uncontrolled, pathological process that typically provokes inflammation in surrounding tissues.Pathophysiologic ChangesNecrosis begins when cells sustain critical damage, leading to swelling of organelles, particularly mitochondria, and rapid ATP depletion. As energy levels decline, membrane ion pumps fail, leading to calcium influx and eventually,...
Necrosis01:16

Necrosis

Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
Tetanus01:29

Tetanus

Tetanus is a life-threatening neurological disorder characterized by persistent muscle contractions and spastic paralysis. It is caused by Clostridium tetani, a motile, Gram-positive, rod-shaped, obligate anaerobe. These bacteria produce terminal endospores, giving them a distinctive “lollipop” or “tennis-racket” appearance. They thrive in anaerobic environments, such as those found in deep puncture wounds.Once introduced into the body, the spores germinate into vegetative cells. These cells...
Inhalation Anthrax01:25

Inhalation Anthrax

Anthrax is a zoonotic disease caused by Bacillus anthracis, a Gram-positive, spore-forming bacterium. It primarily affects herbivorous animals but can be transmitted to humans through skin contact, ingestion, or inhalation of spores.Cutaneous anthrax, the most common form, typically results from direct contact with bacterial spores through skin abrasions and is generally less severe. Gastrointestinal anthrax results from eating undercooked or contaminated meat. It affects the mouth, throat, or...
Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.