Drainage of pus is a typical consequence of a bacterial infection. Bacterial infection can either be localized, such as an infection of a small cut or wound in the skin, or it may spread to involve larger areas of the body. A number of different infections can cause small bumps or nodules that may drain pus. Infections of the genital tract or urinary tract may cause drainage of pus in the urine or vagina in women. When bacteria enter the bloodstream, a potentially life-threatening condition known as sepsis ("blood poisoning") is the result. In addition to drainage of pus, other signs of a bacterial infection include
- warmth to touch,
- redness, and
- pain or sensitivity of the involved area.
Bacterial infections are treated with antibiotics.
Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.
Pictures, Images, Illustrations & Quizzes
Acne (Pimples) Quiz: Test Your Medical IQ
Acne is the most common skin disorder in the world. If you suffer from acne, you are not alone and many treatment options are...
MRSA Infection: Causes, Symptoms, and Treatment
MRSA (methicillin-resistant Staphylococcus aureus) and staph infection are known as the super bug. Learn causes, symptoms, and...
Picture of Boil
A boil, also referred to as a skin abscess, is a localized infection deep in the skin. See a picture of a Boil and learn more...
Pink Eye (Conjunctivitis) Symptoms, Causes, Treatments
Trying to get rid of pink eye? If you woke up with crusty eyelids and red, swollen eyes, you may have pink eye also called...
Skin Conditions Quiz: Common Skin Diseases
Could you identify a scabies infestation? Take the Skin Diseases Pictures Quiz and learn to identify common conditions that...
What Is a Staph Infection? Symptoms, Pictures
Do you know what a staph infection is? Learn about the causes, symptoms, and treatment of staph infections (Staphylococcus...
Causes of Drainage of Pus
Boils (Skin Abscesses)
A boil is a skin abscess, a collection of pus localized deep in the skin. There are several different types of boils. Among them...
Cat Scratch Disease
Cat scratch disease (CSD or cat scratch fever), a bacterial disease caused by Bartonella henselae, is characterized by fever,...
Cellulitis is an acute spreading bacterial infection below the surface of the skin characterized by redness, warmth,...
Ear Infection (Otitis Media)
Middle ear infection or inflammation (otitis media) is inflammation of the middle ear. There are two forms of this type of ear...
Folliculitis is a skin condition that causes small red bumps to form around the hair follicles. Skin bacteria such as...
Gonorrhea In Women
Gonorrhea is a bacterial infection transmitted during sexual contact. In women, symptoms include a yellow vaginal discharge,...
Hidradenitis suppurativa (HS) is a chronic skin condition that causes painful red abscesses in the groin and armpits that may...
Impetigo is a contagious skin infection caused by staph and strep bacteria. There are two types of impetigo: nonbullous and...
Ingrown Toenail (Onychocryptosis)
Ingrown toenails are caused by the growth of the toenail into the surrounding nail fold. Symptoms and signs include toe pain,...
Is a Sty Contagious?
A sty is an infected eyelash hair follicle or meibomian gland. Staph causes most styes. Styes can be treated at home with warm...
Is MRSA Contagious?
MRSA stands for methicillin-resistant Staphylococcus aureus. MRSA typically spreads through person-to-person contact, but it can...
Kidney Infection (Pyelonephritis) Symptoms, Signs, Causes, Treatment
Kidney infection (pyelonephritis) usually is caused from bacteria that have spread from the bladder from a UTI (urinary tract...
MRSA (methicillin-resistant Staphylococcus aureus) bacteria causes skin infections with the following signs and symptoms:...
Necrotizing fasciitis is also known as a flesh-eating bacterial infection, Fournier's gangrene, suppurative fasciitis, and...
A pilonidal cyst is a cyst that forms near the cleft of the buttocks. The cysts are thought to be caused by the penetration of...
Pimple vs. Cold Sore
Pimples are areas of skin inflammation with pus in the center. Cold sores are fluid-filled blisters. Pimples are caused by...
Sinus Infection (Sinusitis)
Sinus infection (sinusitis) is caused by allergies, infection, and chemicals or other irritants of sinuses. Signs and symptoms...
Staph Infection (Staphylococcus Aureus)
Staphylococcus or staph is a group of bacteria that can cause a multitude of diseases. Staph infections can cause illness...
Strep Throat (Treatment, Causes, Home Remedies)
Strep throat is a bacterial infection of the throat. Signs and symptoms of strep throat include headache, nausea, vomiting, sore...
Mycobacterium tuberculosis is the bacterium that causes tuberculosis (TB). Symptoms and signs of TB include bloody sputum, fever,...
Urinary Tract Infections (UTIs)
A urinary tract infection (UTI) is an infection of the bladder, kidneys, ureters, or urethra. E. coli, a type of bacteria that...
Yaws is an infectious disease that mainly occurs in the tropical areas of South and Central America, Asia, Africa, and the...
Other Causes of Drainage of Pus
Examples of Medications for Drainage of Pus
Infectious Disease Resources
Subscribe to MedicineNet's General Health Newsletter