Answer
Serious skin reactions reported with cefalexin include rare erythema multiforme, Stevens-Johnson syndrome and toxic epidermal necrolysis, and acute generalised exanthematous pustulosis (AGEP) of unknown frequency.
Sources for this answer
- Cefalexin 250mg/5ml Oral SuspensionAurobindo Pharma - Milpharm Ltd. · emc · SmPC §4.8 Undesirable effects · Version 8Document updated
Sources checked