Serum Samples will be taken from patients with recurrent Pityriasis Versicolor for the evaluation of vitamin D level.

Inclusion Criteria:

• - Patients with recurrent pityriasis versicolor (active now) and not taking treatment for it.
• Patients of both genders.
• Age ≥18 years old.

Exclusion Criteria:

• - Patients with other cutaneous diseases.
• Patient's having dandruff (scaly scalp) even if not symptomatizing.
• Pregnant and lactating females, children, prisoners, cognitively impaired or mentally disabled subjects.
• Patients with autoimmune diseases.
• Patients with immunodeficiency diseases.
• Immunosuppressed patients e.g. HIV, diabetics, organ transplant, malignancy, patients taking immunosuppressive drugs e.g. chemotherapy, cortisone.

Patients with recurrent Pityriasis Versicolor (more than 2 attacks per year) and of a disseminated nature