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Purulent, seen in infected ulcer. Yellow creamy discharge is observed in staphylococcal infection; bloody opalescent discharge in streptococcal infection, while greenish discharge is seen in the case of Pseudomonas infection. Bloody (sanguineous), usually seen in malignant ulcers and in healing ulcers with healthy granulation tissue; Seropurulent
Pus is an exudate, typically white-yellow, yellow, or yellow-brown, formed at the site of inflammation during infections, regardless of cause. [ 1 ] [ 2 ] An accumulation of pus in an enclosed tissue space is known as an abscess , whereas a visible collection of pus within or beneath the epidermis is known as a pustule , pimple or spot.
Often it is associated with focal bacterial or fungal infections, and can also manifest as one of the symptoms of an internal chemical burn. [2] In liquefactive necrosis, the affected cell is completely digested by hydrolytic enzymes , resulting in a soft, circumscribed lesion consisting of pus and the fluid remains of necrotic tissue.
An abscess is a collection of pus that has built up within the tissue of the body, usually caused by bacterial infection. [6] [7] Signs and symptoms of abscesses include redness, pain, warmth, and swelling. [1] The swelling may feel fluid-filled when pressed. [1] The area of redness often extends beyond the swelling. [8]
An eschar (/ ˈ ɛ s k ɑːr /; Greek: ἐσχάρᾱ, romanized: eskhara; Latin: eschara) is a slough [1] or piece of dead tissue that is cast off from the surface of the skin, particularly after a burn injury, but also seen in gangrene, ulcer, fungal infections, necrotizing spider bite wounds, tick bites associated with spotted fevers and exposure to cutaneous anthrax.
Boils are bumpy, red, pus-filled lumps around a hair follicle that are tender, warm, and painful. They range from pea-sized to golf ball-sized. A yellow or white point at the center of the lump can be seen when the boil is ready to drain or discharge pus. In a severe infection, an individual may experience fever, swollen lymph nodes, and ...
Bacterium-related cutaneous conditions often have distinct morphologic characteristics that may be an indication of a generalized systemic process or simply an isolated superficial infection. [69] [70] Aeromonas infection; African tick bite fever; American tick bite fever (Rickettsia parkeri infection) Arcanobacterium haemolyticum infection
Cutaneous squamous-cell carcinoma (cSCC), also known as squamous-cell carcinoma of the skin or squamous-cell skin cancer, is one of the three principal types of skin cancer, alongside basal-cell carcinoma and melanoma. [10] cSCC typically presents as a hard lump with a scaly surface, though it may also present as an ulcer. [1]