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Background
Patch tests (PTs) with two readings have been used for decades to identify the culprit drug in nonimmediate cutaneous adverse drug reactions (NICADRs), followed more recently by late reading of intradermal tests (IDTs). Some teams tend to perform PTs with only one reading before IDTs or even directly perform IDTs.
Objectives
To evaluate the relevance of a late PT reading on day 4 (D4)...
Background
Patch testing following a standardized protocol is reliable for identifying the culprit drug in cutaneous adverse drug reactions (CADRs). However, these patch tests (PTs) require pharmaceutical material and staff, which are not always easily available.
Objectives
To evaluate an extemporaneous PT method in CADRs.
Methods
We retrospectively analysed data for all patients referred to our...
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