Be aware some herbs and some medications can cause photosensitivity – which is an exaggerated damaging effect of the sun.
The effects can include:
- sun burn
- development of melasma (also called chloasma or “mask of pregnancy”) which is the development of dark pigmentation of areas of the skin on the face – pregnancy is another common cause of this
- increased accumulation of damage to exposed skin over time, from the radiation damage of the sun
- increased accumulation of damage to the eyes over time, from the radiation damage of the sun
This story highlights the development of melanoma in a woman who was taking St. John’s Wort. Note this happened despite the fact that she reports using SPF 30 sun screen throughout her trip to Turkey.