Conjunctivitis, commonly known as 'pink eye' or 'red eye disease', presents with a range of symptoms affecting one or both eyes. These include:

* Redness in one or both eyes
* Swelling of the eyelids
* Itching in one or both eyes
* Increased tear production (watering eyes)
* A sensation of having a foreign body in the eye, leading to a desire to rub them
* Discharge that can form crusts, often making it difficult to open the eyes in the morning
* Sensitivity to light (photophobia)
* Follicles on the inner surface of the lower eyelid