2026 data ClinicalTrials.gov official source

Conditions: P

Compiled by PlainTrial, Clinical Trial Intelligence Editorial Process · January 1, 2026

Every condition beginning with P that has a registered US clinical trial, with how many studies cover each.

2,857 conditions starting with "P"

Showing 2,351–2,400 of 2,857

Condition	Trials	Recruiting
Problem of Aging	2	-
Problem Solving	1	1
Problem;Behaviour;Child	1	-
Problematic Behavior in Children	1	-
Problematic Opioid Use	1	-
Problematic Sexual Behavior Among Preteen Children	1	1
Problems Moving Their Arms and Legs	1	1
Problems Psychosocial	1	-
Problems Related to Life-Management Difficulty	1	-
Problems Related to Social Environment	1	1
PROC	2	2
Procedural Anxiety	5	3
Procedural Complication	1	1
Procedural Pain	10	6
Procedural Sedation	2	1
Procedural Sequelae	1	1
Procedural Skill Competency	1	-
Procedure	1	1
Procedures	1	-
Procedures Requiring Anesthesia	1	-
Prodromal Alzheimer's Disease	1	1
Prodromal Alzheimer's Disease	3	2
Prodromal for Psychotic Illness	1	1
Prodromal Parkinsons Disease	1	1
Prodromal Schizophrenia	5	1
Prodromal Symptoms	3	1
Product Persistence in GI Tract	1	-
Product Transference	1	-
Productivity	1	-
Professional Burnout	4	1
Professional Fulfillment	1	-
Professional Quality of Life	1	-
Professional Stress	1	-
Profound Autism	1	1
Progeria	1	-
Progesterone	1	-
Progesterone Receptor Negative	18	2
Progesterone Receptor Positive	8	1
Progesterone Receptor Positive Tumor	2	-
Progesterone Receptor-negative Breast Cancer	4	-
Progesterone Receptor-positive Breast Cancer	2	-
Progesterone Receptor-Positive Breast Carcinoma	2	2
Prognathism	1	1
Prognostic Stage 0 Breast Cancer AJCC v8	4	-
Prognostic Stage I Breast Cancer AJCC v8	4	-
Prognostic Stage IA Breast Cancer AJCC v8	2	-
Prognostic Stage IB Breast Cancer AJCC v8	2	-
Prognostic Stage II Breast Cancer AJCC v8	5	-
Prognostic Stage IIA Breast Cancer AJCC v8	3	-
Prognostic Stage IIB Breast Cancer AJCC v8	2	-

Data sourced from official public datasets. See our methodology for details.