| http://www.w3.org/ns/prov#value | - PSORIASIS Severe forms of psoriasis, including extensive cutaneous involvement cause permanent inaptitude to donate blood.1 Patients with mild forms of psoriasis, without arthritis, are allowed to donate, provided they are not using prohibitive drugs.1 It is curious that individuals that presented erythroderma are only deferred for six months, since exacerbation of underlying skin disease such as
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