Custom Search



Pathology of Furuncles  

Dr Sampurna Roy MD         





Furuncles (boils) are deep-seated infections with Staphylococcus aureus in and around hair follicles, often in a nasal carrier.

Staphylococcal Infection ;  Toxic Shock Syndrome .

Styes are boils that involve the sebaceous glands around the eyelid.

A carbuncle is a coalescence of multiple furuncles which may lead to multiple points of drainage on the skin surface.

They occur only on hairy surfaces, such as neck, thighs, and buttocks of men, and the axilla, pubic area, and eyelids of both sexes, the latter surfaces predisposed to boil formation by friction or maceration.

The boil begins as a nodule at the base of the hair follicle, followed by a pimple that remains painful and red toe a few days. 

A yellow apex forms, and a central core becomes necrotic and fluctuant.   

Microscopic features: A furuncle consists of a deep dermal abscess centered on a hair follicle.  

Staphylococcal infection by Yutaka Tsutsumi MD

This is usually destroyed, although a residual hair shaft is sometimes present in the center of the abscess.

There is often extension of the inflammatory process into the subcutis.

The overlying epidermis is eventually destroyed and the surface is covered by an inflammatory crust.

Rupture or incision of the boil relieves the pain.

Several boils may occur in close proximity, and they often recur.


Further reading:

Recurrent furunculosis: a review of the literature.

Furuncle of the nose.

Cutaneous myiasis presenting as chronic furunculosis--case report.

Staphylococcus aureus positive for Panton-Valentine leukocidin genes but susceptible to methicillin in patients with furuncles.

Biofilm formation of Staphylococcus aureus strains isolated from impetigo and furuncle: role of fibrinogen and fibrin.







Dr Sampurna Roy  MD

Consultant  Histopathologist (Kolkata - India)






Infectious Disease Online


Pathology Quiz Online 


Paediatric Pathology Online


Pancreatic Pathology Online




Endocrine Pathology Online


Eye Pathology Online


Ear Pathology Online


Cardiac Path Online


Pulmonary Pathology Online


Lung Tumour Online




Nutritional Pathology Online


Environmental Pathology Online


Soft Tissue Tumour Online


GI Path Online-India


Gallbladder Pathology Online


E-book - History of Medicine  


Microscope - Seeing the Unseen



Privacy Policy  

Advertising Policy

Copyright 2018