<prompt> Omenn syndrome isSquamous cell carcinomaChronic mucocutaneous candidiasisIgA deficiencySCID  <response>: Omenn syndrome is an autosomal recessive form of severe combined immunodeficiency SCID characterized by erythroderma skin redness, desquamation peeling skin, alopecia hair loss, chronic diarrhea, failure to thrive, lymphadenopathy enlarged lymph nodes , eosinophilia, hepatosplenomegaly , and elevated serum Ref Harrison20th edition pg 1278 