Haloperidol contraindications include which of the following conditions?

Haloperidol contraindications include which of the following conditions?

• A. Asthma
• B. Narrow angle glaucoma
• C. Hyperthyroidism
• D. Diabetes mellitus

Answer: (B)

Haloperidol is avoided in narrow-angle glaucoma because medications in this class can interfere with the drainage of aqueous humor, and any pupil-dilating or anticholinergic effects can precipitate an acute rise in intraocular pressure in people with narrow-angle anatomy. In such patients, this can trigger a dangerous glaucoma attack that threatens vision, so this condition is a contraindication. The other listed conditions do not inherently create this immediate risk with haloperidol, so they are not considered contraindications in the same way.

Haloperidol is avoided in narrow-angle glaucoma because medications in this class can interfere with the drainage of aqueous humor, and any pupil-dilating or anticholinergic effects can precipitate an acute rise in intraocular pressure in people with narrow-angle anatomy. In such patients, this can trigger a dangerous glaucoma attack that threatens vision, so this condition is a contraindication. The other listed conditions do not inherently create this immediate risk with haloperidol, so they are not considered contraindications in the same way.