Reaction profile

The FDA adverse-event record for nervous system disorder nos

62 FDA adverse-event reports reference nervous system disorder nos (VeDDRA 1642). Plate codes and volume neighbourhood below; species, breeds, and drugs follow.

#1641 of 2,481
by report volume (all reactions)
62
reports citing this reaction
33.9%
death-coded share
Dog
most-affected species

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Nervous system disorder NOS has 62 reports now versus 61 in that prior snapshot: 1 more (1.6%).

Report change
+1
Death-coded reports
+1
Death-coded share
+1.1 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Nervous system disorder NOS changes

FDA AER · VeDDRA plate

Code 1642 VOL-LOW

VOL-LOW · DEATH-HOT · MID-PACK · PHOTO-FINISH · SPECIES-DOG · DRUG-LEAD · DESK-WIDE · BOOK-FULL

  • VOL-LOW 62 reports
  • DEATH-HOT 33.9%
  • MID-PACK #1641/2481
  • PHOTO-FINISH Application site ting…
  • SPECIES-DOG Dog · 47
  • DRUG-LEAD Milbemycin Oxime… · 16
  • DESK-WIDE 20 breeds
  • BOOK-FULL 8/8 fields

Nearest volume peer: Application site tingling (±0 reports)

Upper-third death-coded share drives the outcome stamps on this plate; volume band, corpus rank, and co-report peers follow. Not a clinical diagnosis.

Report-volume neighbourhood around Nervous system disorder NOS

Highest and lowest poles plus nearest volume peers, not a full 2,500-reaction corpus board reprint.

Vomiting · highest174348Application site ting… · near62Claw / hoof / nail lo… · near62Desquamation · near62Dropper, Abnormal · near62Nervous system disord… · thi…62Urinary tract neoplas… · low…10
FDA AER report volume · neighbourhood around Nervous system disorder NOS

Nervous system disorder NOS: high death-coded share in the FDA AER plate

Signature read: Nervous system disorder NOS's 33.9% death-coded share is among the highest in the openFDA reaction corpus. Report volume sits in the middle third of the reaction corpus. Death-coded share is upper-third: 21 of 62 reports (33.9% of named reports). Nearest volume peer: Application site tingling (±0 reports). Lead species Dog (47). Lead co-reported drug Milbemycin Oxime + Spinosad (16).

Read these counts as reporting volume, not risk: per our methodology, A high death-coded share in FDA filings does not prove causation; co-reporting is voluntary temporal association only. Browse the full reactions index or the about page for how PlainBreed frames FDA CVM extracts.

Species Most Affected

Dog 47
Cat 11
Cattle 3
Chicken 1

Breeds Most Affected

Domestic Shorthair 4
Boxer (German Boxer) 3
Chihuahua 3
Crossbred Canine/dog 3
Terrier (unspecified) 3
Terrier - Yorkshire 3
Brittany 2
Bulldog 2
Shepherd Dog - German 2
Terrier - Rat 2

Associated Drugs

Milbemycin Oxime + Spinosad 16
Lotilaner 7
Spinosad 6
Buprenorphine 4
Oclacitinib Maleate 3
Gabapentin 3
Bedinvetmab 3
Monensin Sodium 2
Antibiotic (Unknown) 2
Enrofloxacin 2
Nitenpyram 2
Dexmedetomidine 2
Narasin 2
Maropitant Citrate 2
Bordetella Bronchiseptica Vaccine 2
Ondansetron Hcl 2
Fluralaner Chew Tablets 2
Metoclopramide 2
Metronidazole 2
Tilmicosin Phosphate 1

Nationwide reactions with similar profiles

Two openFDA-derived peer sets for Nervous system disorder NOS, both floored at ≥50 reports so the neighborhoods stay in the advertised mass (the volume chart above is the unfloored photo-finish strip).

Similar report volume

Nearest other reactions by FDA report count (62 here).

Similar death-coded share

Nearest other reactions by death-coded share (33.9% here), distinct from the volume row.

What to do with this reaction

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Nervous system disorder NOS (#1641 of 2,481 by report volume); death-coded 33.9%. PlainBreed reaction plate · death-coded share stamp 33.9% · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →