Cutaneous T-cell lymphoma (CTCL) is a group of rare, non-Hodgkin lymphomas that start in the skin. CTCL often appears as an itchy, red rash and may be confused with other skin infections or problems. The most common types of CTCL are mycosis fungoides and Sezary syndrome. They are usually slow-growing and can be successfully controlled for many years. Rush has a clinic devoted to the treatment of cutaneous T-cell lymphoma.