By Gary M. White, MD
A hair case is an attachment to the hair shed from the follicular opening.
One or multiple white casings are seen on the hairs. With the naked eye, it is easy to slide the cylindrical structure over the shaft and dislodge it. This helps to differentiate the casts from other conditions, such as true nits, that are firmly attached to the hair. Under the microscope, they appear as tubular structures. More patients are females. Multiple hair casts may be seen in scaly scalp conditions, e.g., seborrheic dermatitis and in alopecias.
No treatment is needed nor known, other than treating any underlying associated condition.
Indian Dermatol Online J. 2014 Oct-Dec; 5(4): 554–555
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