April 2020 in “International Journal of Research in Dermatology” Scalp skin conditions are more common in young adults and teenagers, especially males, with itching being the main complaint. The most common conditions are psoriasis and alopecia areata, and these can significantly affect a person's social life due to their psychological impact.
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May 2018 in “Journal of Cosmetic Dermatology” Most women in the study lost hair due to chronic shedding, with stress and nutrient deficiencies being common factors.
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November 2016 in “Journal of The American Academy of Dermatology” Tofacitinib is effective and safe for severe hair loss, but full regrowth is less likely after 10 years of hair loss.
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April 2006 in “Journal of The American Academy of Dermatology” Iron deficiency may be related to hair loss, but there's not enough evidence to recommend iron screening or supplements for all hair loss patients.