Generalized hypertrichosis. (Courtesy of Professor Peter Itin.)
Near total absence of hair in a young patient with vitamin D resistant rickets type IIa (a); note the whitish papules over the central part of the fac...
A patient with keratitis–ichthyosis–deafness syndrome demonstrates atrichia associated with follicular papules in the nape area (a), plantar keratoder...
Short and sparse hair associated with follicular papules a patient with monilethrix; hair beading typical of monilethrix on microscopy.
(a) Light‐coloured and coarse hair in a patient with trichothiodystrophy. (Courtesy of Professor Peter Itin.) (b) Defective cuticle visualized by sca...
Hypertrichosis and hyperpigmented plaques localized to the lower limb in an adult patient with H syndrome. (Courtesy of Professor Avraham Zlotogorski...
Alopecia totalis in a patient with growth retardation, alopecia, pseudoanodontia and optic atrophy (GAPO) syndrome. (Courtesy of Professor David Enk....
Diffuse hypotrichosis in an adult patient with Clouston syndrome. (Courtesy of Professor Maurice Van Steensel.)
Woolly hair in a white woman and her son. (Courtesy of Professor Rudolf Happle.)
Uncombable hair syndrome. (Courtesy of Professor Peter Itin.)
Total lack of hair (a) and follicular lesions (b) in atrichia with papular lesions. On histology, note the conspicuous presence of dermal cysts (c).
Autosomal dominant hypotrichosis of the scalp, caused by a mutation in CDSN .
Sparse and short hair on the scalp of a young patient with hypotrichosis and juvenile macular dystrophy (a); fundus examination reveals severe degener...
(a) Pale and sparse hair in a child with Menkes disease. (Courtesy of Professor Rudolf Happle.) (b) Hair twisting along its axis, typical of pili tor...
Loose anagen syndrome. (Courtesy of Professor Peter Itin.)
Wiry, coarse and sparse hair in Marie Unna hereditary hypotrichosis. (Courtesy of Professor Maurice Van Steensel.)
Sparse, short and light‐coloured hair in a patient carrying a mutation in LIPH .
Hypotrichosis (a) and lamellar ichthyosis (b) in a patient with autosomal recessive ichthyosis with hypotrichosis.
Typical cutaneous features of the trichohepatoenteric syndrome including puffy cheeks (a) and hypotrichosis (b).