In context you can just spell "PN."
PNEUMONIA = "PN"


Some people do a version the sign "lungs" using a distressed facial
expression. This is also the same sign as you might use for one of
the versions of ASTHMA:
PNEUMONIA or ASTHMA (relies on context or is combined with some
amount of fingerspelling)






PNEUMONIA (initialized version)
Many people initialize the sign for LUNGS with the letter "P" to
mean "pneumonia."
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American Sign Language (ASL) online at American Sign Language University ™
ASL resources by Lifeprint.com © Dr. William Vicars