Management of Pruritus in Diabetic Patients

Initial Management Approach

The American Diabetes Association recommends optimizing glycemic control and applying emollients at least once daily to address xerosis, which is the most common cutaneous manifestation in diabetic patients and lowers the threshold for itch 1
The British Journal of Dermatology suggests that moisturizers with high lipid content may be preferred, particularly in elderly diabetic patients 2
Gentle cleansers should be used and hot showers or excessive soap use avoided, which can worsen skin dryness 3

For mild localized pruritus on the cheek, the American Academy of Dermatology recommends applying topical moderate-to-high potency corticosteroids such as prednicarbate cream 0.02%, mometasone furoate 0.1% ointment, or betamethasone valerate 0.1% ointment 3, 4
Topical corticosteroids containing menthol 0.5% may provide additional antipruritic benefit 4
Lotions containing urea or polidocanol may also soothe pruritus 3, 4

For grade 2 or moderate pruritus that persists after 2 weeks of topical therapy, the European Academy of Dermatology and Venereology recommends considering non-sedating second-generation antihistamines 3, 4
Loratadine 10 mg daily or fexofenadine 180 mg daily are preferred for daytime use 4, 2
Cetirizine 10 mg daily may be considered, but first-generation sedating antihistamines like diphenhydramine 25-50 mg or hydroxyzine 25-50 mg should be avoided long-term, especially in elderly patients, as they may predispose to dementia 4, 2

The British Journal of Dermatology advises against using crotamiton cream, as it has been shown to be ineffective compared to vehicle control 5, 2
Long-term sedative antihistamines should be avoided except in palliative settings due to dementia risk 2, 1
Secondary infections should not be overlooked, and bacterial swabs should be taken if impetiginization is suspected, as Staphylococcus aureus is the most frequently detected infectious agent 3

The American Academy of Dermatology recommends reassessing after 2 weeks of treatment, either by healthcare professional or patient self-report 3, 4
If reactions worsen or do not improve after 2 weeks of topical therapy, systemic antihistamines should be considered 3, 4
If grade 3 pruritus develops, causative medications should be interrupted if applicable, and referral to dermatology should be made 4