Ophthalmologic Manifestations of Atopic Dermatitis Clinical Presentation
- Author: R Scott Lowery, MD; Chief Editor: Hampton Roy Sr, MD more...
History
- The most common symptoms include pruritus, erythema, and skin lesions of the antecubital and/or popliteal skin, eyelids, corners of the mouth, neck, outer canthi, or behind the ears.
- In infants, the eruption particularly involves the face, scalp, and extensor surfaces.
- In older children and adults, the neck and antecubital or popliteal areas more commonly are involved.
- Adult patients usually have a history of infantile disease that may require anecdotal history or contacting their caregivers from infancy.
- Most patients have a familial occurrence of symptoms of atopy.
Physical
- The most common physical findings are erythematous, exudative skin lesions of the antecubital and/or popliteal skin, eyelids, corners of the mouth, neck, outer canthi, or behind the ears.
- Scaling, lichenification (thickening of the skin due to scratching and irritation), and pigmentary changes (eg, vitiligo, hyperpigmentation [often seen in patients with darker skin types]) are common in adolescents and adults.
- In severe cases, generalized eruptions over the entire body may occur.
- Possible physical findings on slit lamp examination include blepharitis, atopic keratoconjunctivitis (AKC),[6, 7] scarring of the palpebral conjunctiva, papillary conjunctival reaction, Trantas dots (limbal deposits of eosinophils), atopic cataracts, and keratoconus.
- Unlike vernal conjunctivitis, the lower tarsus is involved more frequently.
- Hyperemia, chemosis, and discharge are more common than papillary or cobblestone reaction.
- Atopic cataracts develop in patients with long-standing atopic disease (10 or more years).
- These patients usually are older children or young adults.
- The incidence of atopic cataracts is estimated to be 10%, and they are most frequently bilateral.
- These cataracts tend to evolve rapidly and may opacify within 6 months.
- The cataracts often begin as a posterior subcapsular opacity and develop into an anterior cortex opacity that frequently resembles the shape of a shield or a bearskin rug.
- Spontaneous retinal detachment is more common in patients with atopic disease than the general population.
- In a few rare, advanced cases, symblepharon, entropion, and trichiasis may be seen.
Causes
- Abnormal skin reactivity is a feature of the disease, and exposure to skin irritants, most frequently water and chemicals, may predispose patients to the development of atopic dermatitis.
- Additionally, since many of these patients have allergic sensitivities to food or inhaled allergens, exposure to these may increase the chances of development of the dermatitis.
- Skin irritants, thought to trigger this more frequently than other allergens, also may be more readily avoidable.
- Psychological stress has been implicated as a possible contributor to disease development.
- Recent studies have implicated loss-of-function mutations in the barrier protein filaggrin and diminished expression of certain antimicrobial peptides in atopic dermatitis skin, which may lead to further treatment research.
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