About 90% of<unk>  reactions are associated with medications. The remaining cases of<unk>  have been associated with infective and other agents. Medicines The most frequently reported drugs that have been associated with the development of<unk>  include penicillin, aminopenicillins, macrolides, quinolones, sulfonamides, hydroxychloroquine, terbinafine, and diltiazem. A more complete list of drugs sorted by their intended actions are: *Antibiotics: Penicillin, ampicillin, amoxicillin, clindamycin, cephalexin, cefepime, cefoxitin, cefazolin, various sulfonamides, various quinolones, vancomycin, levofloxacin, imipenem, meropenem, pristinamycin *Antifungals: Terbinafine, ketoconazole, fluconazole *Anti-inflammatories: Aspirin, celecoxib *Other agents: Hydroxychloroquine (an antimalarial agent), diltiazem (a calcium channel blocker), omeprazole (a proton-pump inhibitor), clenbuterol (a decongestant, bronchodilator), hydroxyzine (An antihistamine medication), and clopidogrel (an indirectly acting platelet inhibitor) Microbe infections Infections with Parvovirus B19, mycoplasma, cytomegalovirus, coxsackie B4 virus, Epstein-Barr virus (EBV), Chlamydophila pneumoniae, E. coli, and Echinococcus have been reported to be associated with the development of<unk>  in the absence of an apparent drug-induced cause. The pathophysiology for the development of these drug-independent cases of<unk>  is unclear. Viral infections have also been observed to be associated with the development of SJS, SJS/TEN, and TEN in the absence of a causative drug. Other agents Herbal medications, spider bites, iopamidol (used for radiocontrast), lacquers, mercury, psoralen (combined with ultraviolet A to treat psoriasis), and xenobiotics have been associated with the development of<unk>  in case reports.
Acute generalized exanthematous pustulosis
Streptococcal intertrigo
Impetigo herpetiformis
Acute cutaneous lupus erythematosus
Polymorphous light eruption
Keratolytic winter erythema
Shingles
Herpetic whitlow