Triangular alopecia is a disease of the skin and subcutaneous layers in which areas of hair begin to fall out, and the lesions form a triangular shape. This condition is quite rare in medicine. Although alopecia is most often called “hair loss,” and the term alopecia only implies a deficiency or complete disappearance of hair only in certain areas of the body.
Symptoms - reduction and thinning of hair - appearance of patches of pustules - paralytic hair loss
Local hair loss is characterized by a certain form. Along the growth line, the hair becomes thin at the roots, while its length remains the same. The alopecia part looks lightish, sometimes with signs of hyperemia. Progression of the disease can cause itching