What is the significance of purplish spots with pneumocystis carinii pneumonia?

Hard to say. Pneumocystis per se is not associated with purplish "spots", but since it is seen in the context of other diseases that damage the immune system it can be seen with other medical problems with purple spots. For ex one of the predisposing for pneumocystis is steroid medicine. Steroids can also cause easy bruising. In the setting of HIV a disease called kaposi's sarcoma this has purple spots, etc.
Not due to PCP. Although rarely, extrapulmonary involvement with pneumocystis occurs. Nonetheless, cutaneous purple colored lesions are probably kaposi's sarcoma, a malignancy caused by herpesvirus 8, and seen in profoundly immuno-suppressed individuals, usually aids. Both of these illness are exceptionally rare or non-existent in persons with a normal immune system & respond to correction of the cd4 counts.

Related Questions

How can a person go a long without treatment, then all of a sudden get pneumocystis carinii pneumonia thrush and be in critical condition?

Frequent. This is the way aids patients who have had HIV infection for a prolonged time without treatment and have very low cd4 lymphocyte counts frequently present to the hospital. Read more...
Thrush. If a person has a problem develop with their immune system then they can suddenly develop pneumocystis pneumonia, thrush and become critically ill. Read more...
HIV. If you have been off antiretroviral medications it is likely that your cd4 counts are below 200. The rate at which this will occur depends upon the counts at the time at which you stopped your meds, and other factors. You need to be back on medication after a review of drug resistance patterns and adhere to physician instructions. Stopping meds is a form of suicide. Good luck and get better soon. Read more...

Why would someone with pneumocystis jiroveci pneumonia have purple spots on body?

Could be other cause. Patients with pneumocystis jirovecii pneumonia can be very sick & develop other complications such as sepsis. Many of them have other underlying disorders or immune system compromise (such as HIV or transplant related immunosuppression) which puts them at risk for severe sepsis. Those purple spots may be related to their critical illness & not due to pneumocystis jirovecii itself. Read more...
HIV. Persons with pneumocystis infection are usually immunosuppressed, and the most common cause is hiv/aids. These patients may also have a type of cancer of the skin caused by herpesvirus 8 called kaposi's sarcoma, and this produces purple skin lesions. Read more...