Health Encyclopedia

Psittacosis

Definition

Psittacosis is an infection caused by Chlamydia psittaci, a type of bacteria found in the droppings of birds. Birds spread the infection to humans.

Alternative Names

Ornithosis; Chlamydia psittaci

Causes, incidence, and risk factors

Psittacosis is a rare disease-- fewer than 50 cases have been reported in the United States in the past 5 years.

Bird owners, pet shop employees, workers in poultry processing plants, and veterinarians are at increased risk for this infection.

Symptoms

Fever and chills
Muscle aches
Headache
Fatigue
Dry cough
Shortness of breath
Blood-tinged sputum

Signs and tests

Abnormal lung sounds such as rales and decreased breath sounds are heard when listening to the chest with a stethoscope.

Tests include:

Treatment

The infection is treated with antibiotics, including:

Tetracycline
Doxycycline
Erythromycin
Azithromycin
Rifampin

Note: Tetracycline by mouth is usually not prescribed for children until after all their permanent teeth have started to grow in. The medicine can permanently discolor teeth that are still forming.

Expectations (prognosis)

Full recovery is expected.

Complications

Decreased lung function as a result of the pneumonia
Heart valve infection
Hepatitis (inflammation of the liver)
Brain involvement

Calling your health care provider

Antibiotics are needed to treat this infection. If you develop symptoms suggestive of psittacosis, call your health care provider.

Prevention

Avoid exposure to birds that may carry this bacteria, such as imported parakeets. Treat any medical problems that lead to a weak immune system, which increases your risk for this disease.

Review Date:7/28/2006
Reviewed By:Charlotte Grayson, MD, Private Practice specializing in Internal Medicine and Infectious Disease, Smyrna, GA. Review provided by VeriMed Healthcare Network.

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