| Both black and white and color film photochemistry relies predominantly on the photosensitivity of microcystalline grains of silver halides. |
| Porphyria cutanea tarda presents with photosensitivity, skin fragility, bruising, and vesicles and bullae that can become hemorrhagic. |
| Rash, photosensitivity, or other dermatologic manifestations may also occur. |
| Essential oils may cause photosensitivity, skin irritation or may sensitize the skin. |
| He was invalided home with an intolerable rash, which was diagnosed as the then unusual mepacrine photosensitivity. |
| Tetracycline can also cause photosensitivity in patients exposed to sunlight. |
