Long-term Outcomes Associated With Juvenile-onset Mycosis Fungoides and Lymphomatoid Papulosis

This is a survey-based study collecting long-term health data from people who were diagnosed with two rare skin conditions — juvenile mycosis fungoides (a type of skin lymphoma) or lymphomatoid papulosis — before age 20. The goal is to understand how these conditions progress over time. **You may be eligible if...** - You were diagnosed with juvenile mycosis fungoides or lymphomatoid papulosis before age 20 - If you are under 18, a parent or guardian can participate on your behalf **You may NOT be eligible if...** - You were diagnosed at age 20 or older - You are under 18 and a parent is not available to provide information Talk to your doctor to see if this trial is right for you.