Hair loss or sparse hair growth (including eyebrows and eyelashes). Keratotic lesions (calluses). Rash (poikiloderma) and blisters. Skin pigmentation differences.
[my.clevelandclinic.org]
Other associated symptoms and signs include sparse hair, eyebrows, and eyelashes; slow growth; small stature; teeth and nail abnormalities; and chronic diarrhea and vomiting
[medicinenet.com]
(Belgium) - >38y - - - RTS2 Growth delay, plantar hyperkeratosis, sparse hair, eyelashes and eyebrows, enamel defects, osteopenia, diarrhea in infancy, hypogonadism, chronic
[databases.lovd.nl]