Psoriasis Can Affect Patient's Mental Health

(August 17, 2010) - Psoriasis (Read about "Psoriasis") does more than just make a person's skin uncomfortable. It can influence the way a person feels about themselves, affecting their mental health. (Read about "Mental Health") Individuals with psoriasis appear to have an increased risk of depression, anxiety and suicide and thoughts of suicide (Read about "Depressive Illnesses" "Anxiety" "Suicide Prevention"), according to a report in the Archives of Dermatology, one of the JAMA/Archives journals.

Psoriasis affects 1 percent to 3 percent of the general population, and estimates suggest 0.4 percent to 2.3 percent of adults have the condition but have not been diagnosed. "Psoriasis has long been recognized to be associated with potentially adverse effects on mental health," the authors write. "In the 1960s, a popular ad campaign labeled the emotional burden of this skin disease as the 'heartbreak of psoriasis.' However, there have been relatively few studies evaluating psychological outcomes in patients with psoriasis."

Researchers studied data from electronic medical records over a 15-year period. The analyses included 146,042 patients with mild psoriasis, 3,956 patients with severe psoriasis and 766,950 patients without psoriasis (five control patients for each patient with psoriasis, selected from the same practice and similar entry dates).

Of patients with mild or severe psoriasis, 25.9 per 1,000 individuals per year were diagnosed with depression, 20.9 per 1,000 per year with anxiety and 0.9 per 1,000 per year with suicidality. The rate of these cases attributable to psoriasis was 11.8 per 1,000 individuals per year for depression, 8.1 per 1,000 per year for anxiety and 0.4 per 1,000 per year for suicidality.

"Stated another way, the excess risk attributable to psoriasis is one case of depression for every 39 patients with severe psoriasis per year (or per 87 patients in patients with mild psoriasis per year)," the authors write. "The excess risks associated with psoriasis for anxiety and suicidality correspond to one case per 123 and 2,500 patients with psoriasis per year, respectively.