Hormones and steroids | External factors |
---|---|
Androgens | Cosmetics |
Anabolic steroids | Pomades |
Oral and topical steroids | Machine oils and tars |
Gonadotropins | Mechanical trauma, e.g. head bands |
Epileptic drugs | |
Phenobarbital | |
Phenytoin | |
Antituberculous drugs | |
Isoniazid | |
Rifampicin |