“…Patients with acute or idiopathic hematoporphyria and patients with toxic hematoporphyria are rarely light sensitive. 10 More reports are needed like those of Taussig.17 who demonstrated the presence of uroporphyrin in the port wine colored urine of one of his patients with hydroa estivale. In other words there is need in future for cases of light sensitivity, that the exact porphyrin present may be determined.…”