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• Pallister-Killian Syndrome
• Paralysis / Spinal Cord Injuries
• Parkinson's Disease
• Parent Training and Information Centers
• Parents With Disabilities
• Parent-to-Parent Message Boards
• Parent-to-Parent Programs - National
• Parent-to-Parent Programs - Regional
• Parry-Romberg's Syndrome
• Pennsylvania Disability Resources
• Peripheral Neuropathy
• Periventricular Leukomalacia
• Pharmaceutical/Drug Assistance Programs
• Pharmacology & Drug Information
• Phenylketonuria (PKU)
• Physical Therapy
• Pierre Robin Syndrome
• Pituitary Tumor
• Playground Equipment - Accessible
• Play Therapy
• Polio & Post-Polio
• Pompe's Disease
• Porphyria
• Positive Behavior Supports 
• Potter's Syndrome
• Prader-Willi Syndrome
• Premature Infants
• Prenatal Diagnosis / Testing
• Progeria
• Protection & Advocacy Organizations
• Proteus Syndrome
• Prune Belly Syndrome
• Pseudotumor Cerebri
• Pseudoxanthoma Elasticum (PXE)
• Psoriasis
• Public Transportation