Browse Clinical Trials by Medical Condition
✍️ By PayTrials Editorial Team — Last reviewed March 2026
Find studies that match your health profile
✍️ By PayTrials Editorial Team — Last reviewed March 2026
Find studies that match your health profile
Clinical trials exist for hundreds of medical conditions—from common diseases like Type 2 diabetes and hypertension to rare disorders and cancer subtypes. PayTrials organizes studies by condition category so you can quickly find opportunities relevant to your health status. Whether you have a specific medical condition or are a healthy volunteer seeking the highest-paying studies, our database connects you with vetted research opportunities. Browse all studies to search by location, compensation, and more.
Studies in this category focus on diabetes (Type 1 and Type 2), obesity, thyroid disorders, metabolic syndrome, and related conditions. These trials often test new medications, lifestyle interventions, or combination therapies. Compensation varies by study design and time commitment.
Cardiovascular trials cover hypertension, heart disease, cholesterol disorders, atrial fibrillation, heart failure, and other heart-related conditions. Participants may receive new medications, devices, or procedures as part of the research.
Neurology trials include Alzheimer's disease, Parkinson's disease, multiple sclerosis, epilepsy, migraines, and other disorders of the brain and nervous system. These studies often require participants with a confirmed diagnosis and may provide access to experimental treatments.
Mental health trials recruit participants with depression, anxiety, PTSD, schizophrenia, bipolar disorder, and other psychiatric conditions. Studies may test new medications, therapies, or digital interventions.
Respiratory trials focus on asthma, COPD, sleep apnea, pulmonary fibrosis, and other lung conditions. Participants often undergo breathing tests and may receive inhalers, biologics, or other respiratory treatments.
Dermatology trials cover psoriasis, eczema, acne, rosacea, alopecia, and other skin conditions. Many studies test topical or injectable treatments and require participants with active, diagnosable conditions.
Cancer trials include studies for breast cancer, lung cancer, prostate cancer, leukemia, immunotherapy trials, and many other cancer types. Oncology research often provides access to cutting-edge treatments not yet available to the general public.
Infectious disease trials cover HIV, hepatitis, COVID-19, RSV, influenza vaccines, and other infections. Vaccine trials often recruit healthy volunteers, while treatment trials may require participants with a specific infection.
Phase 1 trials often require healthy volunteers with no medical condition. These studies test new drugs in humans for the first time and typically offer the highest compensation—often $5,000 to $45,000 or more. Learn more in our Phase 1 trials guide.
PayTrials lists studies for hundreds of conditions beyond the categories above. Use our search and filter tools to find trials that match your specific diagnosis, location, and preferences. Browse all studies or contact us if you need help finding opportunities. You can also explore our Blog for guides on participating in clinical research.