Etiology: Insufficient environmental humidity (<20%), artificially increased temperature and drafts predispose rats to developing this condition. Other physiological factors (age, hydration, nutritional status, and genotype) can also be involved.
Incidence: The incidence of ringtail is uncommon.
Clinical Signs: Annular constriction of the tail is observed in young (suckling and weanling) rats. Necrotic tails may slough.
Diagnosis: Diagnosis is made via clinical signs and history of low environmental humidity.