What are the common causes of yellow pus?

Sexually transmitted diseases (STDs), pyogenic bacteria, and certain fungal infections often cause yellow pus. Pus, created when malicious bacteria release enzymes that destroy and invade proteins in the body, can ooze directly from infected skin and membranes or be contained within an abscess or pustule. Types of infections that can cause yellow pus include strep throat, staph, purulent conjunctivitis, and paronychia. Yellow pus is contagious and contains a large number of leukocytes, or white blood cells, that have been mixed with malicious bacteria in an attempt to stop the infection.

Gonorrhea is the main STD likely to cause yellow pus on or in the genitals. The head of the penis, the urethra and the cervix are usually the site of infection and the places that harbor the greatest amount of yellow pus. Often this pus is discharged during urination, which may be accompanied by sharp pain. Antibiotics are the main treatment for gonorrhea; Once the bacteria is treated, the pus dissipates.

Strep throat is a bacterial infection caused by the group A variety streptococcus bacteria. It produces yellow pus in the back of the throat and on or between the tonsils. This pus is usually accompanied by swelling in the throat or lymph nodes, as well as painful swallowing; fever or chills are also possible. Antibiotics are generally effective in killing the bacteria that thrive within the pus and ending the strep infection. In addition to strep, the bacteria that cause the common cold can also cause yellow pus in the throat.

Infections caused by regular and methicillin-resistant Staphylococcus aureus (MRSA) create lesions and craters in the skin that ooze with yellow pus as the bacteria eat away at the meat. The lesions often appear in groups. Normally acquired by hospital exposure, staphylococcal infections can occasionally be acquired from the microflora in the home or community setting. Regular staph can be treated with methicillin, but MRSA requires stronger and continuous antibiotic therapy.

Yellow pus is typical during an eye infection known as purulent conjunctivitis. During such an infection, the membrane covering the eyeball takes on a pink or red tint and may ooze yellow pus that cakes or crusts at the corners of the eye. This disease usually affects children and is usually treated with azithromycin-containing eye drops.

Paronychia is a fungal infection that affects the toenails and toenails and causes pus to collect under the nail. The cuticles and surrounding flesh often become red, sore, and inflamed as pus seeps onto the cuticle from under the nail. Surgical drainage or the application of antibiotics, such as amoxicillin, is a typical treatment for this condition.

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