• Background and Design.—Alopecia areata is a condition characterized by hair loss in
association with perifollicular infiltration of T cells and antigen-presenting cells. Autoreactive …

The etiology of alopecia areata is unknown. Some clinical features, such as the association
with autoimmune disorders [16] suggest an autoimmune pathogenesis. The immunologic …

Although the etiology of alopecia areata is still unknown, evidence has accumulated to
support an autoimmune pathogenesis for this disease. To evaluate the role of T cells in …

In 11 patients with untreated alopecia areata in the progressive stage of the disease, an in
situ analysis of the inflammatory infiltrate of the hair bulbs was performed by means of …

We studied lymphocyte subsets in the blood of twenty‐four patients with alopecia areata of
various degrees of severity. There was an increase in the ratio of helper to suppressor cells …

Alopecia areata is characterized by peribulbar infiltration by activated T cells. The function of
these T cells in the pathogenesis is unknown. To elucidate the potential role of lesional T …

Much evidence suggests that alopecia areata is a tissue restricted autoimmune disease.
Alopecia areata responds to immunosuppressive agents, and is associated with other tissue …

The populations of activated T‐cell subsets [HLA‐DR+‐Leu 4+ cells, interleukin 2 receptor
positive (IL‐2R+)‐Leu 4+ cells] in the peripheral blood of patients with alopecia areata (AA) …

In situ lymphocyte subsets in 12 patients with patchy alopecia areata or alopecia universalis
were estimated using monoclonal antibodies and immunoperoxidase technique. The …

Alopecia areata remains a disease of unknown cause and unsatisfactory treatment.
Histologically it is characterized by a lymphocytic infiltrate that surrounds the lower half of the …