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Czym różnią się objawy AZS od ŁZS?

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Większości schorzeń skóry głowy nie towarzyszą stany zapalne, a jedynie zmiany miejscowe o charakterze łagodnym. Znane są dwa rodzaje zapalenia skóry głowy – atopowe (AZS) i łojotokowe (ŁZS). Ze względu na to, że początkowe objawy obu schorzeń są podobne i mogą przypominać łupież, stany te bywają mylone, mimo różnych przyczyn powstawania zmian.

Zarówno w przypadku atopowego zapalenia skóry, jak i łojotokowego zapalenia skóry, objawy obejmują nie tylko skórę głowy, ale i inne miejsca na ciele, jak skóra twarzy lub karku. W zależności od schorzenia mogą również występować na klatce piersiowej lub kolanach.

Objawy atopowego zapalenia skóry (AZS)

Atopowe zapalenie skóry to przewlekłe schorzenie, które najczęściej pojawia się w dzieciństwie. W ok. 90 proc. przypadków pierwsze objawy występują przed ukończeniem 5. roku życia.

Wśród objawów klinicznych wyróżniamy uporczywy świąd oraz zapalne zmiany skórne o charakterze wypryski. Istotna jest również lokalizacja zmian skórnych, zależna od wieku pacjenta. U niemowląt objawy występują na głowie, czole i twarzy oraz w miejscach podatnych na otarcia, jak kolana i łokcie. W przypadku dzieci powyżej 2. roku życia zmiany ujawniają się przede wszystkim na wewnętrznych stronach nadgarstków, łokciach i kolanach, a także za uszami. Dorośli najwcześniej obserwują zmiany na twarzy, karku, dłoniach i stopach. Ponadto u pacjentów z AZS występują również takie objawy, jak:

  • suchość skóry,
  • świąd podczas pocenia,
  • rogowacenie okołomieszkowe,
  • przebarwienia powiek i zaciemnienia wokół oczu,
  • nawrotowe zapalenie spojówek,
  • nietolerancja niektórych pokarmów,
  • reakcja alergiczna na wełnę,
  • zaostrzenie zmian skórnych w wyniku stresu,
  • rumień na twarzy.

Atopowe zapalenie skóry uznawane jest również za pierwszą manifestację kliniczną choroby alergicznej. Wśród dzieci częstym powikłaniem AZS jest dychawica oskrzelowa i alergiczny nieżyt błony śluzowej nosa.

Objawy łojotokowego zapalenia skóry głowy (ŁZS)

Łojotokowe zapalenie skóry jest przewlekłą chorobą, której towarzyszy silny stan zapalny skóry. Najczęściej choroba pojawia się w wieku dojrzewania, jednak dużo przypadków rozpoznaje się również u niemowląt i osób po 50. roku życia. Zmiany chorobowe charakteryzują się czerwonymi, kolistymi plamami z wyraźnie czerwonym brzegiem. Do występujących objawów zaliczamy:

  • świąd,
  • złuszczanie otrębiaste,
  • łojotok,
  • tłuste strupy na skórze,
  • przerzedzenie włosów,
  • rumień na skórze,
  • grudki,
  • krostki (niekiedy bolesne),
  • wysięk,
  • łysienie.

Zmiany często występują nie tylko na skórze głowy, lecz również czoła, okolicach zausznych i karku. Mogą również pojawić się pomiędzy łopatkami, na mostku, twarzy, a także w okolicy narządów płciowych i odbytu, czyli w miejscach określanych jako okolice łojotokowe. W nielicznych przypadkach choroba może rozwinąć się do uogólnionego zapalenia skóry.

ŁZS wynika z nadmiernego wydzielania się sebum przez gruczoły potowe, jednak nieznana jest przyczyna tego stanu. Niektórzy naukowcy uważają, że czynnikami wpływającymi na powstawanie łojotokowego zapalenia skóry są zaburzenia układu odpornościowego i hormonalnego, inni zaś zwracają uwagę, że ŁZS może być wywołane przewlekłym stresem i depresją. Czynnikami wyzwalającymi stan zapalny są m.in.: zakażenie drożdżakowym grzybem Pityrosporum ovale, zmęczenie, stres, trądzik zwyczajny, otyłość, nieprawidłowe odżywianie, nadużywanie alkoholu czy choroby neurologiczne.

Źródła:

Bednarek M. i Musiał C., Najczęstsze problemy pacjenta trychologicznego – choroby skóry głowy, „Kosmetologia Estetyczna” 2019, nr 3, s. 393- 396.

Małek E. Rozpoznawanie zaburzeń wzrostu, uszkodzeń i chorób włosów, Radom 2007, s. 15-18.

Wanak-Karzak M. i Kurzawa R., Atopowe zapalenie skóry – pierwsza manifestacja kliniczna choroby alergicznej.

Woldan-Tambor A. i Zawilska J. B, Atopowe zapalenie skóry (AZS) – problem XXI wieku, „Farm Pol” 2009, nr. 65(11), s. 804-811.

Przeczytaj także: Badania: cząsteczki alphaCT1 wspierają proces leczenia blizn chirurgicznych

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