When does redness need urgent help?

Get emergency care for a red eye with changes in sight, pain when looking at light, a severe headache with nausea, or one pupil larger than the other. An eye injury, a chemical splash or something stuck in the eye also needs emergency assessment. Do not drive yourself if you need emergency care.4

Arrange an urgent appointment if a swollen eyelid is red, hot, painful, tender or blistered, or you cannot open your eye. Sudden eyelid drooping, fever or feeling generally unwell also need urgent help. A red eye in someone wearing contact lenses needs urgent assessment because an eye infection is possible. A newborn with a red or sticky eye needs urgent medical care.45

Is the redness on the skin or in the eye?

Check whether the redness affects the upper or lower eyelid skin, the eyelash edges, or the white of the eye. Eyelid dermatitis, also called eyelid eczema, causes inflamed skin that can itch, burn, scale or swell. Bloodshot eyes usually involve enlarged blood vessels on the eye's surface. Dryness, allergies, infection, particles and injury can cause that redness.26

What you noticePossible explanation
Itchy, burning or scaly eyelid skinContact dermatitis from irritation or allergy.
Itchy, sore or red crusted eyelid edgesBlepharitis, which is inflammation along the eyelid edge.
Gritty or burning eyes with stickinessConjunctivitis, which affects the tissue lining the eyelids and covering the eye.
Sore, watery or blurry eyesDry eyes are one possibility.
A lump or local swelling on the eyelidA stye or a blocked eyelid gland called a chalazion.
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These patterns help you describe the problem, not diagnose it. Several causes share the same symptoms, so a pharmacist, doctor or optician can help you decide what needs treatment.5

What can irritate the skin around your eyes?

Eyelid skin is thinner than skin elsewhere, so brief contact can be enough to cause a reaction. Shampoo rinsing over the eyelids is one possible trigger. Fragrance in personal care products can cause contact dermatitis where the product touches the skin. Symptoms can include intense itching, dryness, cracking, tenderness, stinging, blisters or crusting.7

The culprit does not have to be an eye product. Nail polish or artificial nail chemicals can reach the eyelids when you touch your face, even without a rash on your hands. Contact dermatitis can come and go when exposure is occasional; repeated exposure can leave skin thicker, scaly and cracked.7

Make a list of skincare, makeup and hair products you use, giving the bathroom shelf its rare chance to contribute to useful paperwork. Include nail products, eyelash adhesives, eye drops, contact lens solution and tools such as eyelash curlers. Note what touched the area before each episode, including products transferred from your hands.16

Can a product you have used for years cause redness?

Yes. Contact allergy can develop after repeated use of a previously tolerated product, and the rash often appears one to several days after exposure. Irritant dermatitis comes from damage to the skin rather than an allergic immune reaction. Both can look similar. Sensitive skin, eczema, asthma or hay fever increase susceptibility to irritation, but contact allergy can develop in people without a history of sensitive skin.16

What should you do now?

  1. 1Check for the urgent symptoms above before treating the redness as a skincare problem.
  2. 2For irritated eyelid skin, stop eye makeup while the skin is inflamed and avoid suspected triggers.
  3. 3Wash eyelids with plain water or a cream cleanser designed for sensitive skin. Touch the area only with clean, rinsed hands.
  4. 4Avoid rubbing or scratching. Protective glasses can help when cold, wind or dust aggravate the area.
  5. 5If the eye itself is red, leave contact lenses out until it has recovered. Ask a pharmacist or eye care professional which drops or cleaning products are appropriate.
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For mild eye irritation without warning signs, rest and a cool compress over closed eyes can relieve symptoms. If fatigue or eye strain is responsible, resting the eyes can be enough. These measures do not replace assessment for pain, discharge or problems with sight.23

What treatment helps eyelid dermatitis?

A clinician can examine the skin and prescribe treatment for the inflammation. Options include corticosteroid creams such as hydrocortisone and calcineurin inhibitors, another type of medicine that reduces inflammation. Some cases need corticosteroids taken by mouth. Get the treatment and application instructions from your clinician rather than choosing a medicine for the eyelids yourself.6

If allergy is suspected, patch testing can help identify the trigger. Bring product names to your appointment, since 'the one in the small jar' leaves rather a lot to investigate. Avoiding the identified trigger helps prevent another episode; treatment alone does not remove the exposure.16

How long does redness take to improve?

With treatment, irritant eyelid dermatitis can start feeling better after one to two days. Allergic eyelid dermatitis can take two to three days of treatment to start improving. Those are times to initial improvement, not complete clearance. Tell your clinician if discomfort interrupts sleep or daily activities. Changing your diet is not an established way to prevent eyelid contact dermatitis.6

A painless bright red patch on the white of the eye can be a broken surface blood vessel, sometimes following coughing or straining. It usually fades over one to two weeks, like a bruise. You cannot rinse the blood away. Contact a healthcare professional if you take blood thinning medicine, or if pain or vision changes accompany the redness.2

When should you book a routine appointment?

Contact a healthcare professional if the eye itself stays red longer than one to two days, produces yellow or green discharge, or keeps becoming red. Eyelid symptoms that persist or fail to improve also need assessment. For redness that recurs, identifying the cause matters more than repeatedly treating the same symptoms.235

Once the eye has recovered, keep contact lenses clean and do not wear them longer than recommended. Remove eye makeup properly, wash your hands and take regular breaks from prolonged screen use. Avoid known eye irritants such as dust, smoke or pet dander. These habits reduce avoidable irritation, but cannot prevent every cause of redness.3

Where this answer comes from

  1. 1Eyelid contact dermatitisdermnetnz.org
  2. 2Eye redness: MedlinePlus Medical Encyclopediamedlineplus.gov
  3. 3Red Eye: Causes, Treatment & Preventionmy.clevelandclinic.org
  4. 4Red eyenhs.uk
  5. 5Eyelid problemsnhs.uk
  6. 6Eyelid Dermatitis: Contact, Symptoms, Causes, Treatmentmy.clevelandclinic.org
  7. 7Eczema types: Contact dermatitis signs and symptomsaad.org