Dysguesia causes and medicines

Common causes
Orodental infection
Upper respiratory tract infection
Sinus infection

Less common
Idiopathic dysgeusia
Mental illness (e.g. depression)
Drugs

Uncommon
Neurological
Stroke
Head trauma (e.g. fractures of the petrous temporal bone)
Cranial nerve disorders e.g. damage to the chorda tympani during
middle ear surgery
Carotid artery dissection with involvement of the chorda tympani
Facial nerve palsy
Multiple sclerosis
Borrelia burgdorferi associated - neuropathy
Gastrointestinal
Irradiation of the head and neck
Gastrointestinal reflux disease
Hepatitis and hepatic cirrhosis
Malabsorption (e.g. cystic fibrosis)
Crohn’s disease
Others
Diabetes mellitus
Niacin (vitamin B3) deficiency
Zinc deficiency
Copper deficiency
Mercury poisoning

Medications associated with altered taste
Antirheumatic agents Penicillamine, levamisole, gold, levodopa
Antithyroid agents Carbimazole, thiouracil
Anti-inflammatory agents Phenylbutazone, acetylsalicylic acid
Anti diabetic drugs Biguanides
Cytotoxic agents Doxorubicin, methotrexate, vincristine, carmustine
Diuretics and antihypertensive agents Captopril, diazoxide, ethacrynic acid
Antimicrobials Metronidazole, lincomycin, ethambutol, HIV protease inhibitors, Amphotericin
Anti-seizure agents Carbamazepine, baclofen
Others Phenindione, allopurinol, vitamin D, oral contraceptive pill