It's important to avoid excessive sun exposure when taking St. John's Wort as it may predispose you to photosensitivity, or light sensitivity, and cause your skin to burn more so than usual.
Lupus-a chronic autoimmune disease causing arthritic pain, fatigue, skin rashes and photosensitivity, without enough UV rays the body cannot process vitamin D.
Tretinoin, for example, commonly known as Retin-A, often results in worse acne, as well as photosensitivity, excessive redness and flaky skin.
St. Johns Wort may also causes photosensitivity or skin sensitivity to sunlight, so you should avoid sun exposure when taking this herb.
Avoid using blue light therapy if you take prescriptions that cause photosensitivity.
Of the tetracyclines, demeclocycline may cause increased photosensitivity.
The child is experiencing photosensitivity, or sensitivity to light.