وَأَنفِقُوا۟ فِى سَبِيلِ ٱللَّهِ وَلَا تُلْقُوا۟ بِأَيْدِيكُمْ إِلَى ٱلتَّهْلُكَةِ ۛ وَأَحْسِنُوٓا۟ ۛ إِنَّ ٱللَّهَ يُحِبُّ ٱلْمُحْسِنِينَ ﴿١٩٥﴾
你们当为主道而施舍，你们不要自投於灭亡。你们应当行善；真主的确喜爱行善的人。
Halal General principles
Is it permitted to seek medical treatment?
Short answer
Yes. Seeking treatment is allowed and encouraged, and it does not go against trust in Allah. The Quran forbids casting oneself into destruction (2:195). Treatment must not use anything haram if a lawful alternative exists, and haram medicine is allowed only in necessity.
Evidence
Quran
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Questions about halal and haram
Is it permitted to seek medical treatment?
Yes. Seeking treatment is allowed and encouraged, and it does not go against trust in Allah. The Quran forbids casting oneself into destruction (2:195). Treatment must not use anything haram if a lawful alternative exists, and haram medicine is allowed only in necessity.