Diagnosis: Fixed drug reaction
Description: Red patch with hyperpigmented center.
Morphology: Hyperpigmentation
Site: Arm,forearm
Sex: M
Age: 23
Type: Clinical
Submitted By: Nameer Al-Sudany
Differential Diagnosis
History: Two red patches with purplish centers on the forearm and flank have appeared next day following Co-trimoxazole tablets taken by the patient.