Psoriasis on a man's torso. Psoriasis is a skin condition where excessive growth of skin cells can lead to itchy, scaly, thickened patches (plaques) of skin which may become infected. Psoriasis is sometimes triggered by emotional stress, some infections or drugs, although often the cause is unknown. | |
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Crédit: | Science Photo Library / Biophoto Associates |
Taille de l’image : | 3419 px × 5109 px |
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