Patchy alopecia areata sparing gray hairs: a case series

Area of Science:

• Dermatology
• Trichology
• Autoimmune diseases

Background:

• Alopecia areata is a common autoimmune condition causing non-scarring hair loss.
• The condition typically presents with patchy or diffuse hair loss.
• Variations in presentation, though rare, warrant clinical attention.

Observation:

• Four cases of a rare alopecia areata variant were observed.
• This variant presented as patchy hair loss affecting only pigmented hairs.
• Gray hairs were consistently spared in all observed cases.

Findings:

• The observed alopecia areata variant selectively targets pigmented hair follicles.
• Preservation of gray hairs is a distinguishing feature of this rare presentation.
• Differential diagnosis is crucial to distinguish from vitiligo and other hair disorders.

Implications:

• Recognizing this rare variant aids in accurate diagnosis and patient counseling.
• Understanding selective hair color involvement may offer insights into alopecia areata pathogenesis.
• Further research is needed to elucidate the mechanisms behind this specific presentation.