75 citations,
January 1995 in “American journal of primatology” Vervet monkeys show physical changes like hair loss and scrotal color changes due to stress or nutrition issues.
8 citations,
October 1989 in “Journal of the American Academy of Dermatology” A 5-year-old boy's seasonal hair loss is linked to his allergies.
February 2017 in “The journal of allergy and clinical immunology/Journal of allergy and clinical immunology/The journal of allergy and clinical immunology” Immunotherapy helped a 5-year-old boy regrow hair and prevent seasonal alopecia areata.
37 citations,
January 2009 in “Dermatology” Healthy women tend to lose more hair in July and April, and the least in February.
April 2020 in “Arquivo Brasileiro De Medicina Veterinaria E Zootecnia” A horse in Brazil had seasonal hair loss possibly linked to light exposure and melatonin levels.