c195acfe_f_Hair_Loss__Alopecia__in_Cats__Diagnosis
[Condition] Injection site alopecia [Description] Hair loss at the site of an injection of a medication or vaccine; skin may become thickened; in cats, ulcers may develop [Symptoms] Hair loss occurs several months after injection; area may become hyperpigmented [Treatment] None; the condition is permanent [Diagnosis] 
History and physical examination
Causes of Hair Loss (Alopecia) in Cats
Diagnosis