إِنَّمَا يُرِيدُ اللّهُ لِيُذْهِبَ عَنْكُمُ الرِّجْسَ” وَقُلْتُ: السَّلامُ عَلَيْكَ يَا أَبَتاهُ يَا رَسُولَ اللّهِ فَقُلتُ: وَعَلَيْكَ السَّلامُ يَا قُرَّةَ عَيْنِي وَثَمَرَةَ فُؤَادِي The Holy Prophet hasn't described sickness but has mentioned of weak point, and it is quite obvious that the healing of weak spot is different from curing ailment. https://thebookmarkking.com/story13201583/the-smart-trick-of-hadiths-english-that-no-one-is-discussing