Editing List of diseases (P) (section)

===Per===
* [[Sensory processing disorder|Perceptual disorder]]

====Peri====
* [[Periarteritis nodosa]]
* [[Pericardial constriction with growth failure]]
* [[Pericardial defect diaphragmatic hernia]]
* [[Pericardium absent mental retardation short stature]]
* [[Pericardium congenital anomaly]]
* [[Perilymphatic fistula]]
* [[Perimyositis]]
* [[Perinatal infections]]
* [[Periodic disease]]
* [[Periodic fever, aphthous stomatitis, pharyngitis and adenitis]]
* [[Periodic limb movement disorder]]
* [[Periodontal disease]] / [[Periodontitis]]
* [[Perioral dermatitis]]
* [[Peripartum cardiomyopathy]]
* [[Peripheral blood vessel disorder]]
* [[Peripheral nervous disorder]]
* [[Peripheral neuroectodermal tumor]]
* [[Peripheral neuropathy]]
* [[Peripheral T-cell lymphoma]]
* [[Peripheral type neurofibromatosis]]
* [[Perisylvian syndrome]]
* [[Peritonitis]]
* [[Periventricular laminar heterotopia]]
* [[Periventricular leukomalacia]]

====Perl–Pert====
* [[Perlman syndrome]]
* [[Pernicious anemia]]
* [[Perniola–Krajewska–Carnevale syndrome]]
* [[Perniosis]]
* [[Peroxisomal Bifunctional Enzyme Deficiency]]
* [[Peroxisomal defects]]
* [[Persistent Müllerian duct syndrome]]
* [[Persistent parvovirus infection]]
* [[Persistent sexual arousal syndrome]]
* [[Persistent truncus arteriosus]]
* [[Pertussis]]