2026 data ClinicalTrials.gov official source

Conditions: H

Compiled by PlainTrial · January 1, 2026

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

1,701 conditions starting with "H"

Showing 51–100 of 1,701

Condition	Trials	Recruiting
Hamartoma Syndrome, Multiple	1	1
Hammertoe	1	1
Hand	1	1
Hand Arthritis	2	1
Hand Dermatitis	1	-
Hand Eczema	1	-
Hand Foot Syndrome	1	-
Hand Function	2	-
Hand Hygiene	3	-
Hand Injuries	6	4
Hand Injuries and Disorders	1	-
Hand Injury Wrist	1	-
Hand Osteoarthritis	3	-
Hand Rejuvination	1	-
Hand Strength	1	1
Hand Surgery	3	-
Hand Transplantation	1	1
Hand Weakness	1	1
Hantaan Virus Disease, Puumala Virus	1	-
Happiness	1	1
Haptics	1	1
Hard Lipid Exudates	1	-
Hard of Hearing	1	-
Hard Palate Squamous Cell Carcinoma	1	1
Harm	1	-
Harm Reduction	8	6
Harmful; Use, Alcohol	1	1
Hartmanns Stump Leakage	1	1
Hashimoto Disease	2	2
hATTR	1	1
hATTR-PN	1	1
Hay Fever	4	-
Hazardous and Harmful Alcohol Use	1	-
Hazardous Drinking	4	1
Hb-SS Disease	1	1
HbA1c	3	2
HbA1c Level	1	1
HBeAg-negative Chronic Hepatitis B	1	-
Hbsc	1	-
Hbss	1	-
HBV	2	-
HCC	14	9
HCC - Hepatocellular Carcinoma	1	-
HCT for Neurologic Autoimmune Disorders	1	-
HCV	9	3
HCV Coinfection	1	-
HCV Infection	2	-
HDL Cholesterol	1	1
Head & Neck Squamous Cell Carcinoma (HNSCC)	1	1
Head and Neck (HNSCC)	2	1

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