The number after each condition is how many registered trials in our index study it or a narrower condition, all years and all statuses. Each link opens the full list.
Top A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
- Pain (9,078 trials)
- Prostatic Neoplasms (6,440 trials)
- Pain, Postoperative (5,409 trials)
- Pulmonary Disease, Chronic Obstructive (5,326 trials)
- Parkinson Disease (4,473 trials)
- Pancreatic Neoplasms (3,670 trials)
- Premature Birth (2,520 trials)
- Precursor Cell Lymphoblastic Leukemia-Lymphoma (2,519 trials)
- Psychological Well-Being (2,164 trials)
- Psychotic Disorders (1,581 trials)
- Psoriasis (1,462 trials)
- Pneumonia (1,382 trials)
- Peripheral Arterial Disease (1,356 trials)
- Postoperative Complications (1,317 trials)
- Periodontitis (1,206 trials)
- Pediatric Obesity (1,121 trials)
- Polycystic Ovary Syndrome (949 trials)
- Prediabetic State (909 trials)
- Pre-Eclampsia (881 trials)
- Periodontal Diseases (863 trials)
- Patient Satisfaction (861 trials)
- Prostatic Hyperplasia (805 trials)
- Pulmonary Embolism (780 trials)
- Patient Compliance (749 trials)
- Pulmonary Arterial Hypertension (691 trials)
- Parasomnias (648 trials)
- Postoperative Nausea and Vomiting (631 trials)
- Primary Myelofibrosis (618 trials)
- Post-Acute COVID-19 Syndrome (596 trials)
- Papillomavirus Infections (561 trials)
- Personal Satisfaction (539 trials)
- Pressure Ulcer (520 trials)
- Pelvic Organ Prolapse (512 trials)
- Pancreatitis (489 trials)
- Purpura, Thrombocytopenic, Idiopathic (481 trials)
- Peripheral Nervous System Diseases (475 trials)
- Postpartum Hemorrhage (463 trials)
- Peripheral Vascular Diseases (440 trials)
- Paresis (435 trials)
- Precursor T-Cell Lymphoblastic Leukemia-Lymphoma (419 trials)
- Pruritus (419 trials)
- Pneumonia, Ventilator-Associated (417 trials)
- Pregnancy Complications (410 trials)
- Patient Participation (409 trials)
- Phobia, Social (363 trials)
- Pulmonary Atelectasis (363 trials)
- Presbyopia (333 trials)
- Pulmonary Fibrosis (333 trials)
- Proteinuria (319 trials)
- Peri-Implantitis (318 trials)
- Patient Acceptance of Health Care (306 trials)
- Pelvic Pain (302 trials)
- Pneumococcal Infections (298 trials)
- Patellofemoral Pain Syndrome (294 trials)
- Psychomotor Agitation (280 trials)
- Parkinson Disease 4, Autosomal Dominant Lewy Body (279 trials)
- Polycythemia Vera (276 trials)
- Plaque, Amyloid (271 trials)
- Panic Disorder (264 trials)
- Poliomyelitis (262 trials)
- Pancreatitis, Chronic (260 trials)
- Postoperative Cognitive Complications (256 trials)
- Peritoneal Neoplasms (242 trials)
- Periapical Periodontitis (232 trials)
- Pleural Effusion (230 trials)
- Pain, Procedural (229 trials)
- Pharyngitis (225 trials)
- Precancerous Conditions (214 trials)
- Parkinsonian Disorders (213 trials)
- Pelvic Floor Disorders (211 trials)
- Primary Immunodeficiency Diseases (207 trials)
- Pituitary Neoplasms (192 trials)
- Pathologic Processes (190 trials)
- Phenylketonurias (188 trials)
- Post-Traumatic Headache (186 trials)
- Pancreatic Diseases (184 trials)
- Polycystic Kidney, Autosomal Dominant (182 trials)
- Primary Ovarian Insufficiency (179 trials)
- Premenstrual Syndrome (176 trials)
- Pneumothorax (174 trials)
- Pleural Effusion, Malignant (167 trials)
- Peanut Hypersensitivity (164 trials)
- Phantom Limb (159 trials)
- Polyps (159 trials)
- Prehypertension (159 trials)
- Pheochromocytoma (156 trials)
- Pneumonia, Viral (156 trials)
- Paraplegia (147 trials)
- Placenta Accreta (144 trials)
- Problem Behavior (143 trials)
- Prader-Willi Syndrome (140 trials)
- Pathologic Complete Response (138 trials)
- Psychological Trauma (137 trials)
- Polyradiculoneuropathy, Chronic Inflammatory Demyelinating (136 trials)
- Post-Concussion Syndrome (136 trials)
- Pseudomonas Infections (136 trials)
- Peptic Ulcer (134 trials)
- Pneumonia, Bacterial (134 trials)
- Postural Orthostatic Tachycardia Syndrome (134 trials)
- Primary Dysautonomias (131 trials)
- Pneumoperitoneum (130 trials)
- Postoperative Hemorrhage (130 trials)
- Periodontal Pocket (127 trials)
- Personality Disorders (125 trials)
- Polyneuropathies (121 trials)
- Post-Dural Puncture Headache (119 trials)
- Perinatal Death (118 trials)
- Peritonitis (115 trials)
- Pdgfra-Associated Chronic Eosinophilic Leukemia (113 trials)
- Patient Preference (110 trials)
- Pneumonia, Pneumocystis (107 trials)
- Premature Ejaculation (106 trials)
- Pulmonary Edema (106 trials)
- Pancreatic Fistula (104 trials)
- Paraganglioma (103 trials)
- Pick Disease of the Brain (103 trials)
- Prosthesis Failure (103 trials)
- Pterygium (103 trials)
- Pulmonary Eosinophilia (103 trials)
- Paralysis (101 trials)
- Pulpitis (101 trials)
- Plaque, Atherosclerotic (100 trials)
- Penile Neoplasms (98 trials)
- Pancreatic Cyst (96 trials)
- Pilonidal Sinus (93 trials)
- Prolapse (92 trials)
- Peripheral Arterial Occlusive Disease 1 (90 trials)
- Persistent Vegetative State (87 trials)
- Pain, Intractable (86 trials)
- Phobia, Specific (85 trials)
- Prostatic Neoplasms, Castration-Resistant (85 trials)
- Peripheral Nerve Injuries (84 trials)
- Prostatic Diseases (84 trials)
- Pregnancy, Ectopic (78 trials)
- Preterm Premature Rupture of the Membranes (75 trials)
- Pituitary Diseases (74 trials)
- Placenta Previa (74 trials)
- Puberty, Precocious (74 trials)
- Pancreatitis, Acute Necrotizing (73 trials)
- Pelvic Neoplasms (73 trials)
- Pemphigus (73 trials)
- Polymyositis (73 trials)
- Pneumonia, Aspiration (72 trials)
- Postthrombotic Syndrome (72 trials)
- Phobic Disorders (71 trials)
- Platelet Glycoprotein IV Deficiency (71 trials)
- Polymyalgia Rheumatica (68 trials)
- Paraproteinemias (66 trials)
- Perceptual Disorders (66 trials)
- Pinealoma (66 trials)
- Presbycusis (66 trials)
- Prostatitis (65 trials)
- Purpura, Thrombotic Thrombocytopenic (65 trials)
- Paresthesia (64 trials)
- Pulmonary Emphysema (64 trials)
- Parathyroid Neoplasms (63 trials)
- Pemphigoid, Bullous (62 trials)
- Pituitary ACTH Hypersecretion (61 trials)
- Pelvic Girdle Pain (58 trials)
- Polycystic Kidney Diseases (58 trials)
- Piriformis Muscle Syndrome (57 trials)
- Pregnancy in Obesity (57 trials)
- Pigmentation Disorders (56 trials)
- Pure Autonomic Failure (56 trials)
- Parasitic Diseases (55 trials)
- Peptic Ulcer Hemorrhage (55 trials)
- Parathyroid Diseases (54 trials)
- Pseudophakia (54 trials)
- Peroneal Neuropathies (53 trials)
- Periodontal Attachment Loss (51 trials)
- Pseudotumor Cerebri (51 trials)
- Psychomotor Disorders (51 trials)
- Pleural Diseases (50 trials)
- Polypoidal Choroidal Vasculopathy (50 trials)
- Pouchitis (50 trials)
- Pyelonephritis (50 trials)
- Pregnancy Complications, Infectious (49 trials)
- Pyloric Stenosis, Hypertrophic (49 trials)
- Pericarditis (48 trials)
- Penile Induration (46 trials)
- Pregnancy in Diabetics (46 trials)
- Periapical Diseases (45 trials)
- Port-Wine Stain (45 trials)
- Pneumonia, Pneumococcal (44 trials)
- Phlebitis (43 trials)
- Photophobia (42 trials)
- Premenstrual Dysphoric Disorder (42 trials)
- Pulmonary Heart Disease (42 trials)
- Persian Gulf Syndrome (41 trials)
- Poisoning (41 trials)
- Persistent Fetal Circulation Syndrome (40 trials)
- Protein-Energy Malnutrition (40 trials)
- Puerperal Disorders (40 trials)
- Patella Fracture (39 trials)
- Patellar Dislocation (39 trials)
- Prolonged Grief Disorder (39 trials)
- Precursor B-Cell Lymphoblastic Leukemia-Lymphoma (38 trials)
- Panuveitis (37 trials)
- Pseudomyxoma Peritonei (37 trials)
- Persistent Infection (36 trials)
- Purpura (36 trials)
- Pyoderma Gangrenosum (36 trials)
- Philadelphia Chromosome (35 trials)
- Prosthesis-Related Infections (35 trials)
- Pelvic Inflammatory Disease (34 trials)
- Pharyngeal Neoplasms (34 trials)
- Proximal Femoral Fractures (34 trials)
- Porphyrias (33 trials)
- Pancreatic Intraductal Neoplasms (32 trials)
- Pseudarthrosis (32 trials)
- Pseudoxanthoma Elasticum (32 trials)
- Pancreatic Pseudocyst (31 trials)
- Pulmonary Valve Insufficiency (31 trials)
- Plasmacytoma (30 trials)
- Post-Cardiac Arrest Syndrome (30 trials)
- Purpura, Thrombocytopenic (30 trials)
- Pericardial Effusion (29 trials)
- Pregnancy, Prolonged (29 trials)
- Protoporphyria, Erythropoietic (29 trials)
- Papilledema (28 trials)
- Polycythemia (28 trials)
- Postpoliomyelitis Syndrome (28 trials)
- Prolactinoma (28 trials)
- Parotid Neoplasms (27 trials)
- Pathological Conditions, Anatomical (27 trials)
- Placenta Diseases (27 trials)
- Pancreatic cancer, adult (25 trials)
- Paramyxoviridae Infections (25 trials)
- Photosensitivity Disorders (25 trials)
- Primary Graft Dysfunction (25 trials)
- Papillary Thyroid Microcarcinoma (24 trials)
- Paranasal Sinus Diseases (24 trials)
- Paranasal Sinus Neoplasms (24 trials)
- Pathological Conditions, Signs and Symptoms (24 trials)
- Penetrating Atherosclerotic Ulcer (24 trials)
- Psychogenic Nonepileptic Seizures (24 trials)
- Paraparesis, Tropical Spastic (23 trials)
- Placental Insufficiency (23 trials)
- Propionic Acidemia (23 trials)
- Pseudohypoparathyroidism (23 trials)
- Pulmonary Valve Stenosis (23 trials)
- Patient-Ventilator Asynchrony (22 trials)
- Polyarteritis Nodosa (22 trials)
- Post-Exercise Hypotension (22 trials)
- Post-Lyme Disease Syndrome (22 trials)
- Primary hyperoxaluria type 1 (22 trials)
- Pancytopenia (21 trials)
- Peptic Ulcer Perforation (21 trials)
- Peutz-Jeghers Syndrome (21 trials)
- Porphyria, Acute Intermittent (21 trials)
- Paranoid Disorders (20 trials)
- Parasitemia (20 trials)
- Pneumonia, Mycoplasma (20 trials)
- Primary Progressive Nonfluent Aphasia (20 trials)
- Protein Deficiency (20 trials)
- Psychophysiologic Disorders (20 trials)
- Pulmonary Alveolar Proteinosis (20 trials)
- Pulmonary edema of mountaineers (20 trials)
- Prodromal Symptoms (19 trials)
- Papilloma (18 trials)
- Piebaldism (18 trials)
- Polycystic liver disease (18 trials)
- Puberty, Delayed (18 trials)
- Pudendal Neuralgia (18 trials)
- Pancreatic carcinoma, familial (17 trials)
- Peroxisomal Disorders (17 trials)
- Plagiocephaly, Nonsynostotic (17 trials)
- Plasmablastic Lymphoma (17 trials)
- Pleural Neoplasms (17 trials)
- Protozoan Infections (17 trials)
- Pyruvate Kinase Deficiency of Red Cells (17 trials)
- POEMS Syndrome (16 trials)
- Pectus Carinatum (16 trials)
- Pedophilia (16 trials)
- Pemphigoid, Benign Mucous Membrane (16 trials)
- Periapical Abscess (16 trials)
- Pierre Robin Syndrome (16 trials)
- Plagiocephaly (16 trials)
- Polymorphic Catecholaminergic Ventricular Tachycardia (16 trials)
- Placenta, Retained (15 trials)
- Polyendocrinopathies, Autoimmune (15 trials)
- Puerperal Infection (15 trials)
- Paget Disease, Extramammary (14 trials)
- Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections (14 trials)
- Peripartum Cardiomyopathy (14 trials)
- Perivascular Epithelioid Cell Neoplasms (14 trials)
- Preleukemia (14 trials)
- Pain, Referred (13 trials)
- Pantothenate Kinase-Associated Neurodegeneration (13 trials)
- Paraphilic Disorders (13 trials)
- Pediatric Crohn's disease (13 trials)
- Pneumoconiosis (13 trials)
- Polyposis, Gastric (13 trials)
- Positive-Pressure Respiration, Intrinsic (13 trials)
- Posterior Tibial Tendon Dysfunction (13 trials)
- Proctitis (13 trials)
- Protein-Losing Enteropathies (13 trials)
- Pulmonary Alveolar Proteinosis, Acquired (13 trials)
- Pulmonary Aspergillosis (13 trials)
- Pupil Disorders (13 trials)
- Pachyonychia Congenita (12 trials)
- Pediatric acute-onset neuropsychiatric syndrome (12 trials)
- Periprosthetic Fractures (12 trials)
- Peritonsillar Abscess (12 trials)
- Pharyngeal Diseases (12 trials)
- Phimosis (12 trials)
- Plague (12 trials)
- Prion Diseases (12 trials)
- Proctocolitis (12 trials)
- Progeria (12 trials)
- Pseudohypoaldosteronism (12 trials)
- Pediatric ulcerative colitis (11 trials)
- Pelizaeus-Merzbacher Disease (11 trials)
- Phyllodes Tumor (11 trials)
- Polychondritis, Relapsing (11 trials)
- Priapism (11 trials)
- Pyoderma (11 trials)
- Paraganglioma, Extra-Adrenal (10 trials)
- Pathophobia (10 trials)
- Penile Diseases (10 trials)
- Pleuropulmonary blastoma (10 trials)
- Pneumocystis Infections (10 trials)
- Polyuria (10 trials)
- Prognathism (10 trials)
- Paratyphoid Fever (9 trials)
- Parkinson Disease, Secondary (9 trials)
- Peritoneal Diseases (9 trials)
- Peritoneal Fibrosis (9 trials)
- Picornaviridae Infections (9 trials)
- Platelet Aggregation, Spontaneous (9 trials)
- Polydipsia, Psychogenic (9 trials)
- Polyposis Syndrome, Hereditary Mixed, 1 (9 trials)
- Popliteal Artery Aneurysm (9 trials)
- Prescription Drug Overuse (9 trials)
- Progesterone Resistance (9 trials)
- Prurigo (9 trials)
- Pulmonary Arteriovenous Fistulas (9 trials)
- Pulmonary Atresia (9 trials)
- Pyloric Stenosis (9 trials)
- Pyruvate Dehydrogenase Complex Deficiency Disease (9 trials)
- Paraneoplastic Syndromes (8 trials)
- Pitt-Hopkins syndrome (8 trials)
- Pneumonia, Staphylococcal (8 trials)
- Polycystic Kidney, Autosomal Recessive (8 trials)
- Porphyria, Variegate (8 trials)
- Prescription Drug Misuse (8 trials)
- Primary hyperoxaluria type 2 (8 trials)
- Prostatic Intraepithelial Neoplasia (8 trials)
- Protoporphyria, Erythropoietic, X-Linked Dominant (8 trials)
- Paraparesis (7 trials)
- Paraparesis, Spastic (7 trials)
- Pemphigus, Benign Familial (7 trials)
- Pleurisy (7 trials)
- Polyhydramnios (7 trials)
- Popliteal Cyst (7 trials)
- Portal Vein, Cavernous Transformation Of (7 trials)
- Posterior Leukoencephalopathy Syndrome (7 trials)
- Postphlebitic Syndrome (7 trials)
- Poxviridae Infections (7 trials)
- Pre-Excitation Syndromes (7 trials)
- Pregnancy, Tubal (7 trials)
- Prostatism (7 trials)
- Parapsoriasis (6 trials)
- Parkinson Disease, Familial, Type 1 (6 trials)
- Paronychia (6 trials)
- Patient Dropouts (6 trials)
- Penis agenesis (6 trials)
- Periapical Granuloma (6 trials)
- Phobia, School (6 trials)
- Pityriasis Rubra Pilaris (6 trials)
- Platelet Storage Pool Deficiency (6 trials)
- Porphyria Cutanea Tarda (6 trials)
- Pregnancy, Ovarian (6 trials)
- Pancoast Syndrome (5 trials)
- Pancreatitis, Alcoholic (5 trials)
- Paralysis, Hyperkalemic Periodic (5 trials)
- Pericoronitis (5 trials)
- Periodontal Atrophy (5 trials)
- Phosphorus Metabolism Disorders (5 trials)
- Polydactyly (5 trials)
- Postcholecystectomy Syndrome (5 trials)
- Postpericardiotomy Syndrome (5 trials)
- Prejudice (5 trials)
- Prenatal Exposure Delayed Effects (5 trials)
- Prostate Cancer, Hereditary, 7 (5 trials)
- Prostate cancer, familial (5 trials)
- Protein C Deficiency (5 trials)
- Proteostasis Deficiencies (5 trials)
- Proteus Syndrome (5 trials)
- Psychoses, Substance-Induced (5 trials)
- Pterygium Of Conjunctiva And Cornea (5 trials)
- Pulmonary Disease, Chronic Obstructive, Severe Early-Onset (5 trials)
- Pyridoxine-dependent epilepsy (5 trials)