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Postinfectious vasculitis
Postinfectious vasculitis (ORPHA:48435, ICD-10 I77.6) is vessel-wall inflammation following viral or bacterial infection, mainly CMV, VZV, HIV, parvovirus B19, and hepatitis B or C, treated with antivirals rather than immunosuppression.
Postinflammatory hypomelanosis
Postinflammatory hypomelanosis, or postinflammatory hypopigmentation, is acquired partial or total skin pigment loss after inflammation, injury, or procedures; more visible in darker skin, usually resolving spontaneously within weeks to months.
Postlaminectomy kyphosis
Postlaminectomy kyphosis (ICD-11 FC01.3) is a forward spinal deformity after laminectomy, the leading iatrogenic cervical kyphosis; caused by posterior tension-band loss, affecting 21% of adults and 37-100% of children after multilevel surgery.
Postmastectomy radiotherapy
Postmastectomy radiotherapy (PMRT) is external-beam radiation to the chest wall and regional nodes after mastectomy, recommended for most node-positive breast cancer patients to reduce recurrence and improve survival.
Postmaturity syndrome
Postmaturity syndrome (dysmaturity syndrome, Clifford syndrome, ICD-11 KA22.3) affects infants born at or after 42 weeks who show placental-insufficiency signs: peeling skin, long meconium-stained nails, wasting, hypoglycemia, and meconium aspiration risk.
Postmenopausal atrophic vaginitis
Postmenopausal atrophic vaginitis is thinning and inflammation of the vaginal tissues caused by declining estrogen after menopause, now grouped under genitourinary syndrome of menopause (GSM).
Postmenopausal osteopenia
Postmenopausal osteopenia (閉経後骨減少症, ICD-11 FB83.01) is low bone density in women after menopause, T-score −1.0 to −2.5 on DXA, managed by fracture-risk assessment, lifestyle measures, and individualized drug therapy.
Postmenopausal osteoporosis
Postmenopausal osteoporosis, the most common primary osteoporosis, caused by postmenopausal estrogen deficiency driving RANKL-mediated bone resorption; diagnosed by DXA T-score ≤ −2.5 or fragility fracture, treated first with bisphosphonates.
Postmenopausal uterine bleeding
Postmenopausal uterine bleeding (PMB) is abnormal bleeding 12+ months after the last menstrual period. Most cases stem from genitourinary atrophy (60%), but about 10% signal endometrial cancer; ACOG 2026 recommends combined ultrasound and biopsy.
Postmenopause
Postmenopause: the life stage after menopause, dated 12 months after the final menstrual period, typically from about age 51, marked by estrogen loss, bone loss, and differing hormone therapy risk profiles.
Postmortem computed tomography
Postmortem computed tomography (PMCT) is the cross-sectional X-ray examination of a body after death, used in forensic death investigation to detect fractures, foreign bodies, gas, and fluid collections.
Postnatal Care
Postnatal care (postpartum care) is health care for mother and newborn in the first six weeks (42 days) after birth. WHO's 2022 guideline sets 63 recommendations; over 3 in 10 women and babies miss early postnatal care.
Postoperative Period
Postoperative period: the phase following a surgical operation, from PACU recovery through 30- and 90-day outcomes. Covers surgical stress response, Aldrete/QoR recovery scoring, ERAS pathways, and ASA quality indicators.
Postorgasmic illness syndrome
Postorgasmic illness syndrome (POIS), also called post-orgasmic illness syndrome, is a rare urogenital syndrome of flu-like, allergic-type, and cognitive symptoms within hours after ejaculation, lasting 2 to 7 days; first described 2002, fewer than 100 reported cases, cause unknown.
Postpartum acute renal failure
Postpartum acute renal failure (postpartum acute kidney injury, PPAKI, ICD-10 O90.4) is sudden kidney function decline from delivery to six weeks postpartum, caused by preeclampsia, hemorrhage, sepsis, and HELLP, with 10.8% case fatality in low-income settings.
Postpartum bleeding
Postpartum bleeding (postpartum hemorrhage, PPH) is excessive bleeding after childbirth, the leading direct cause of maternal death; defined by ACOG as ≥1000 mL or hypovolemia within 24 hours, prevented with uterotonics and treated with the MOTIVE bundle and tranexamic acid.
Postpartum coagulation defects
Postpartum coagulation defects (ICD-11 JA43.3) are clotting disorders, chiefly hypofibrinogenemia and fibrinolysis, that cause or worsen bleeding after childbirth; managed with tranexamic acid, fibrinogen replacement, and viscoelastic-guided transfusion.
Postpartum depression
Postpartum depression, also called postnatal depression, is depression starting within 12 months of childbirth that affects about one in eight new mothers and needs treatment.
Postpartum depression screening
Postpartum depression screening uses brief validated questionnaires, most often the 10-item Edinburgh Postnatal Depression Scale (EPDS), to identify probable depression after childbirth and trigger further assessment.
Postpartum infections
Postpartum infections (puerperal fever, childbed fever) are bacterial genital tract infections from rupture of membranes to 42 days postpartum; endometritis is most common, cesarean the main risk factor, treated with clindamycin plus gentamicin.
Postpartum period
Postpartum period (puerperium, fourth trimester): the weeks after childbirth when the mother recovers physiologically. WHO defines six weeks; ACOG 12 weeks; includes postpartum depression, LAM contraception, and postpartum care visits.
Postpartum psychosis
Postpartum psychosis (puerperal psychosis): rare psychiatric emergency after childbirth, 1–2 per 1,000 deliveries, sudden onset within 2 weeks, hallucinations, delusions, mania; strongly linked to bipolar disorder; lithium first-line.
Postpartum telogen effluvium
Postpartum telogen effluvium (PPTE), also called telogen gravidarum, is diffuse hair shedding 2–4 months after childbirth from delayed anagen release as pregnancy-prolonged follicles enter telogen; usually self-limited within 6–12 months.
Postpartum thyroiditis
Postpartum thyroiditis, also called PPT, is a painless autoimmune thyroid inflammation arising within 12 months of delivery in previously euthyroid women, causing transient thyrotoxicosis, then often hypothyroidism, with permanent hypothyroidism in 10-20% of cases.
Postpoliomyelitis syndrome
Postpoliomyelitis syndrome (PPS, post-polio syndrome): new weakness, fatigue, and pain appearing 15-30 years after recovery from paralytic polio, affecting 20-85% of survivors; a clinical diagnosis of exclusion with no specific drug treatment.
Postprandial glucose test
Postprandial glucose test: blood glucose measured after a meal, usually 2 h after the start of eating; used for postprandial hyperglycemia in diabetes and pregnancy, with ADA/IDF targets.
Postprandial hypotension
Postprandial hypotension is an abnormally large fall in blood pressure within two hours of a meal, defined as a systolic drop over 20 mmHg, common in older adults.
Postprandial somnolence
Postprandial somnolence, or food coma, is drowsiness after eating, peaking 1-2 hours post-meal; caused by gut signals, metabolites, and circadian dip, not blood flow shifts.
Postprocedural hypothyroidism
Postprocedural hypothyroidism (ICD-11 5D40) is hypothyroidism caused by a medical procedure, mainly total thyroidectomy, lobectomy, or radioactive iodine therapy; managed with lifelong levothyroxine and TSH monitoring.
Postprocedural ovarian failure
Postprocedural ovarian failure (ICD-11 5D44; ICD-10-CM E89.4) is iatrogenic loss of ovarian function after bilateral oophorectomy, pelvic surgery, chemotherapy, or radiation, managed with hormone therapy until about age 50-51.