Acral necrosis: Difference between revisions

Acral Necrosis
	Acral necrosis due to bubonic plague.jpg
Synonyms	N/A
Pronounce	N/A
Specialty	N/A
Symptoms	Black discoloration of fingers, toes, ears, nose
Complications	Infection, gangrene, amputation
Onset	N/A
Duration	N/A
Types	N/A
Causes	Vascular occlusion, sepsis, frostbite, Raynaud's phenomenon
Risks	N/A
Diagnosis	Clinical examination, Doppler ultrasound, angiography
Differential diagnosis	N/A
Prevention	N/A
Treatment	Revascularization, antibiotics, debridement, amputation
Medication	N/A
Prognosis	Variable, depending on underlying cause
Frequency	Rare
Deaths	N/A

Latest revision as of 00:28, 5 January 2025

File:Left foot third degree frostbite.png

Left foot third degree frostbite

File:Gangrene toes (1).jpg

Gangrene of toes

File:Acral gangrene due to plague.jpg

Acral gangrene due to plague

Acral necrosis is a medical condition characterized by the death of tissue in the extremities, such as the fingers, toes, ears, and nose. This condition is often a result of inadequate blood supply, leading to tissue ischemia and necrosis.

Etiology[edit]

Acral necrosis can be caused by a variety of factors, including:

Vascular occlusion: This can occur due to thrombosis, embolism, or vasculitis.
Sepsis: Severe infections can lead to disseminated intravascular coagulation (DIC), which can cause microvascular occlusion.
Frostbite: Exposure to extreme cold can lead to freezing of tissues and subsequent necrosis.
Raynaud's phenomenon: This condition causes episodic vasospasm of the arteries, leading to reduced blood flow.
Diabetes mellitus: Poorly controlled diabetes can lead to peripheral vascular disease and neuropathy, increasing the risk of necrosis.

Pathophysiology[edit]

The pathophysiology of acral necrosis involves the interruption of blood flow to the affected areas, leading to tissue ischemia. Without adequate oxygen and nutrient supply, the tissue undergoes necrosis. The necrotic tissue can become a site for bacterial infection, further complicating the condition.

Clinical Presentation[edit]

Patients with acral necrosis typically present with:

Black discoloration: The affected areas may appear black or dark brown due to tissue death.
Pain: Initially, there may be pain due to ischemia, but as necrosis progresses, the area may become numb.
Swelling: Inflammation may occur around the necrotic tissue.
Ulceration: Open sores may develop as the necrotic tissue breaks down.

Diagnosis[edit]

Diagnosis of acral necrosis involves:

Clinical examination: Physical examination of the affected areas.
Doppler ultrasound: To assess blood flow in the affected extremities.
Angiography: Imaging to visualize blood vessels and identify occlusions.
Blood tests: To check for underlying conditions such as diabetes or infection.

Treatment[edit]

The treatment of acral necrosis depends on the underlying cause and may include:

Revascularization: Surgical procedures to restore blood flow, such as bypass surgery or angioplasty.
Antibiotics: To treat or prevent infection in necrotic tissue.
Debridement: Surgical removal of necrotic tissue to promote healing.
Amputation: In severe cases, removal of the affected extremity may be necessary.

Prognosis[edit]

The prognosis of acral necrosis varies depending on the underlying cause and the timeliness of treatment. Early intervention can improve outcomes, but severe cases may result in permanent loss of function or amputation.

Prevention[edit]

Preventive measures include:

Managing underlying conditions: Such as diabetes and vascular diseases.
Avoiding exposure to extreme cold: To prevent frostbite.
Regular medical check-ups: For early detection and management of risk factors.

@@ Line 1: / Line 1: @@
-== Acral Necrosis ==
+{{Infobox medical condition
+| name = Acral Necrosis
+| image = Acral necrosis due to bubonic plague.jpg
+| caption = Acral necrosis due to bubonic plague
+| field = [[Dermatology]], [[Vascular medicine]]
+| symptoms = [[Black discoloration]] of [[fingers]], [[toes]], [[ears]], [[nose]]
+| complications = [[Infection]], [[gangrene]], [[amputation]]
+| causes = [[Vascular occlusion]], [[sepsis]], [[frostbite]], [[Raynaud's phenomenon]]
+| diagnosis = [[Clinical examination]], [[Doppler ultrasound]], [[angiography]]
+| treatment = [[Revascularization]], [[antibiotics]], [[debridement]], [[amputation]]
+| prognosis = Variable, depending on underlying cause
+| frequency = Rare
+}}
+[[File:Left foot third degree frostbite.png|thumb|Left foot third degree frostbite]] [[File:Gangrene toes (1).jpg|left|thumb|Gangrene of toes]] [[File:Acral gangrene due to plague.jpg|thumb|Acral gangrene due to plague]]
+'''Acral necrosis''' is a medical condition characterized by the death of tissue in the extremities, such as the fingers, toes, ears, and nose. This condition is often a result of inadequate blood supply, leading to tissue ischemia and necrosis.
-[[Image:Acral gangrene due to plague.jpg|thumb|right|250 px|A hand with acral gangrene ]]
+==Etiology==
+Acral necrosis can be caused by a variety of factors, including:
-'''Acral necrosis''' is a severe dermatological manifestation, characterized by the black discoloration and necrotic degeneration of skin and underlying tissues, predominantly observed on the extremities. This clinical symptom has been historically associated with the [[bubonic plague]], an infectious disease caused by the bacterium ''Yersinia pestis''. The vivid dark discoloration linked with the bubonic plague is believed to have contributed to the term "[[Black Death]]", a descriptor for both the ailment and the devastating [[pandemic]] of the 14th century. Contrary to common belief, the appellation "Black Death" is derived more from the metaphorical interpretation of "black", representing something dire or terrible, rather than the actual physical manifestation.<ref>Byrne, J. P. (2004). ''The Black Death''. Greenwood Publishing Group.</ref>
+* '''[[Vascular occlusion]]''': This can occur due to [[thrombosis]], [[embolism]], or [[vasculitis]].
+* '''[[Sepsis]]''': Severe infections can lead to [[disseminated intravascular coagulation]] (DIC), which can cause microvascular occlusion.
+* '''[[Frostbite]]''': Exposure to extreme cold can lead to freezing of tissues and subsequent necrosis.
+* '''[[Raynaud's phenomenon]]''': This condition causes episodic vasospasm of the arteries, leading to reduced blood flow.
+* '''[[Diabetes mellitus]]''': Poorly controlled diabetes can lead to peripheral vascular disease and neuropathy, increasing the risk of necrosis.
-== Pathophysiology ==
+==Pathophysiology==
+The pathophysiology of acral necrosis involves the interruption of blood flow to the affected areas, leading to tissue ischemia. Without adequate oxygen and nutrient supply, the tissue undergoes necrosis. The necrotic tissue can become a site for bacterial infection, further complicating the condition.
-The pathogenesis of acral necrosis is rooted in thrombosis and subsequent hemorrhage beneath the skin. The accumulation of red blood cells beyond the capillary confines results in visible ecchymosis or bruising. This can arise from trauma, infection, or underlying systemic conditions. However, the characteristic black discoloration and tissue destruction in acral necrosis ensue when there's prolonged disruption of blood supply, leading to tissue ischemia and eventual necrosis.
+==Clinical Presentation==
+Patients with acral necrosis typically present with:
-== Clinical Significance ==
+* '''[[Black discoloration]]''': The affected areas may appear black or dark brown due to tissue death.
+* '''[[Pain]]''': Initially, there may be pain due to ischemia, but as necrosis progresses, the area may become numb.
+* '''[[Swelling]]''': Inflammation may occur around the necrotic tissue.
+* '''[[Ulceration]]''': Open sores may develop as the necrotic tissue breaks down.
-* '''Bubonic Plague Connection''': The most infamous association of acral necrosis is with the bubonic plague, where extremities, including fingers, toes, and nose, manifest with the necrotic appearance.
+==Diagnosis==
-* '''Prognosis and Treatment''': Acral necrosis, when promptly diagnosed and treated, may have a favorable prognosis, with affected regions regaining functionality. However, if left untreated or addressed in advanced stages, the condition can be life-threatening.<ref>Prentice, M. B., & Rahalison, L. (2007). Plague. ''The Lancet'', 369(9568), 1196-1207.</ref>
+Diagnosis of acral necrosis involves:
-== Differential Diagnosis ==
+* '''[[Clinical examination]]''': Physical examination of the affected areas.
+* '''[[Doppler ultrasound]]''': To assess blood flow in the affected extremities.
+* '''[[Angiography]]''': Imaging to visualize blood vessels and identify occlusions.
+* '''[[Blood tests]]''': To check for underlying conditions such as diabetes or infection.
-While acral necrosis is a salient feature of bubonic plague, the differential diagnosis should encompass other conditions that can cause similar clinical pictures, such as:
+==Treatment==
-* [[Raynaud's phenomenon]]
+The treatment of acral necrosis depends on the underlying cause and may include:
-* [[Peripheral vascular disease]]
-* [[Frostbite]]
-* Other infections leading to septic embolisms
-== References ==
+* '''[[Revascularization]]''': Surgical procedures to restore blood flow, such as [[bypass surgery]] or [[angioplasty]].
-<references />
+* '''[[Antibiotics]]''': To treat or prevent infection in necrotic tissue.
+* '''[[Debridement]]''': Surgical removal of necrotic tissue to promote healing.
+* '''[[Amputation]]''': In severe cases, removal of the affected extremity may be necessary.
-==External links==
+==Prognosis==
-* [http://www.emedicine.com/EMERG/topic428.htm eMedicine] - Detailed overview of acral necrosis with illustrative images.
+The prognosis of acral necrosis varies depending on the underlying cause and the timeliness of treatment. Early intervention can improve outcomes, but severe cases may result in permanent loss of function or amputation.
-{{DEFAULTSORT:Acral Necrosis}}
+==Prevention==
-[[Category:Symptoms and signs: Skin and subcutaneous tissue]]
+Preventive measures include:
-[[Category:Infectious diseases]]
+* '''[[Managing underlying conditions]]''': Such as diabetes and vascular diseases.
+* '''[[Avoiding exposure to extreme cold]]''': To prevent frostbite.
+* '''[[Regular medical check-ups]]''': For early detection and management of risk factors.
-{{Symptom-stub}}{{links}} {{adapted}}
+==See Also==
+* [[Gangrene]]
+* [[Peripheral artery disease]]
+* [[Raynaud's phenomenon]]
+{{Medical conditions}}
+{{stub}}
+[[Category:Dermatology]]
+[[Category:Vascular diseases]]
+[[Category:Medical emergencies]]

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Acral Necrosis
Acral necrosis due to bubonic plague.jpg
Synonyms	N/A
Pronounce	N/A
Specialty	N/A
Symptoms	Black discoloration of fingers, toes, ears, nose
Complications	Infection, gangrene, amputation
Onset	N/A
Duration	N/A
Types	N/A
Causes	Vascular occlusion, sepsis, frostbite, Raynaud's phenomenon
Risks	N/A
Diagnosis	Clinical examination, Doppler ultrasound, angiography
Differential diagnosis	N/A
Prevention	N/A
Treatment	Revascularization, antibiotics, debridement, amputation
Medication	N/A
Prognosis	Variable, depending on underlying cause
Frequency	Rare
Deaths	N/A