Psoriasis. Close-up of psoriasis on the skin of a 40-year-old female patient following streptococcal tonsillitis. Psoriasis occurs when the immune system mistakes a normal skin cell for a pathogen,and sends out faulty signals that cause overproduction of new skin cells. The body cannot shed the cells fast enough,resulting in patches (plaques) of scaly,thick skin,which are often itchy and may become infected. Psoriasis is thought to be triggered by emotional stress,some infections or certain drugs,although in many cases there is no obvious cause | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Marazzi, Dr. P. |
Bildgröße: | 3413 px × 5120 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
|