Detail clinical history and examination is needed. If it turns out to be the MF than you need to understand it. Mycosis fungoides is the most common form of a type of blood cancer called cutaneous T-cell lymphoma. Cutaneous T-cell lymphomas occur when certain white blood cells, called T cells , become cancerous; these cancers characteristically affect the skin, causing different types of skin lesions.
Next Steps
Depending on stage, treatment is given to pt.
Types of standard treatment which are used:
Photodynamic therapy
Radiation therapy
Chemotherapy
Other drug therapy
Immunotherapy
Targeted therapy
High-dose chemotherapy and radiation therapy with stem cell transplant
So it's better if you consult soon for this case.