Reaction profile
The FDA adverse-event record for application site hair loss
7,798 FDA adverse-event reports reference application site hair loss (VeDDRA 3). See the species, breeds, and drugs most associated with it below.
- 7,798
- reports citing this reaction
- 0.6%
- death-coded share
- Cat
- most-affected species
- Selamectin
- most-associated drug
Species Most Affected
Breeds Most Affected
Associated Drugs
Application site hair loss Reaction Insights
7,798 reports name Application site hair loss; 47 recorded a death outcome (0.6% of reported events, not a population-level mortality rate). VeDDRA code: 3.
By species: Cat (7,490 reports), Dog (278 reports), Cattle (21 reports). By breed: Domestic Shorthair (5,129), Domestic Longhair (503), Domestic Mediumhair (451).
Most co-reported drugs: Selamectin (2,240 reports), Selamectin;Sarolaner (2,135 reports), Fluralaner Spot-On Solution (1,843 reports), Fluralaner/Moxidectin Spot-On (603 reports).
Read these counts as reporting volume, not risk: per our methodology, co-reporting reflects temporal association captured in voluntary submissions, not proof that a drug caused this reaction. A widely-prescribed drug will rack up more raw co-reports at an identical true rate than a rarely-used one, so compare within similar-exposure products.
Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025
Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.