Can seborrheic dermatitis cause a positive tissue transglutaminase iga antibody, low level?

No: Positive tissue transglutamase IgA antibodies are often seen in celiac disease, but would not be explained by seborrheic dermatitis. At labcorp values up to 3 units/ml are normal and from 4 to 10 are considered weak positives. Celiac disease should be confirmed by biopsy of the intestine.

No: In and of itself , seborrheic dermatitis does not cause any significant immunologic disorders although certain diseases do have an association with seborrheic dermatitis-like rashes such as zinc deficiency syndromes and parkinsonism, for instance.