Table 2 Result and interpretation of smell tests in 21 patients with SWEDDs
Case NoAge (years)SexUPSIT scorePD probability22Disease duration (years)Used dopaminergic drugs?Parkinsonian signs
172W22High5YesS, T, R
261M29Low2NoT
351W29Low4NoT, R
475W32Low6NoT, R
581M18High22YesT
678W27Low10YesT, S
760W30Low11YesT, R, S
879M33Low15NoT
969M33Low7YesT, S
1038M34Low3NoT, S, R
1168M26Low20YesT, S, R
1246W33Low5NoT, S, R
1350W29Low40YesT, S, R
1466M27Low5NoT, S, R
1571W23High10NoT, S
1679W28Low7YesT, S, R
1766M19High2NoT
1865W33Low13NoT, S
1970M18High4YesB, T, R
2065M26Low2NoB, T, R
2163W25Low2NoS, T, R
  • Patient No 13 had tremor since her early teens. Patient No 19 had a Mini-Mental State examination score of 24/30.

  • B, bradykinesia with motor decrement and fatiguing on sequential movement; PD, Parkinson’s disease; R, rigidity; S, slowness without true bradykinesia; SWEDDs, patients initially diagnosed as Parkinson’s disease who subsequently had normal DaTSCANs; T, tremor; UPSIT, 40 items University of Pennsylvania Smell Identification Test.