Disease/Syndrome

Contact dermatitis, photoallergic

Category

Skin Disease

Acute/Chronic

Subacute

Synonyms

PACD

Biomedical References

Search PubMed

Comments

Photoallergic contact dermatitis (PACD) is a type of allergic contact dermatitis. The causative agent becomes biologically active as an allergen only after it absorbs UV light. Patients experience delayed itching and vesiculation, and only sensitized individuals react. The diagnosis of PACD can be confirmed by photo-patch testing. Occupational PACD is most prevalent among pharmacists and pharmaceutical workers who handle sulfanilamide, promethazine, or chlorpromazine. [Marks, p. 201-5]

Latency/Incubation

At least 4 days and may take years to become sensitized; Once sensitized, the worker's dermatitis begins one to several days contact and sufficient UV exposure.

Diagnostic

Photo patch testing

ICD-9 Code

692.70

Related Information in Haz-Map
Symptoms/Findings

Symptoms/Findings associated with this disease:

Job Tasks

High risk job tasks associated with this disease:

Agents

Hazardous agents that cause the occupational disease: