Islam teaches that this life is a test, and that suffering is part of it: not a sign that God does not care. God is Just and Wise, and every hardship, borne with patience, brings reward and forgiveness of sins, while injustice by people will be settled on the Day of Judgment.
The fuller answer
The Quran says that God will certainly test people with some fear, hunger and loss of wealth, lives and fruits, and gives good news to those who are patient. It also says that with hardship comes ease, and God does not burden a soul beyond its capacity. Muslims see in suffering a chance for growth, humility and a closer link to God, and for others a call to help.
Muslims also believe that much suffering comes from human injustice that God allows because He has given people free choice, and that in the next life, all wrongs will be put right: the oppressed will receive justice and an innocent child's pain will be answered with a great reward. Like every faith, Islam does not claim to explain every case, and it asks for trust in God's wisdom.
Allah does not charge a soul except [with that within] its capacity. It will have [the consequence of] what [good] it has gained, and it will bear [the consequence of] what [evil] it has earned. "Our Lord, do not impose blame upon us if we have forgotten or erred. Our Lord, and lay not upon us a burden like that which You laid upon those before us. Our Lord, and burden us not with that which we have no ability to bear. And pardon us; and forgive us; and have mercy upon us. You are our protector, so give us victory over the disbelieving people."
This answer follows the mainstream Sunni understanding and is general learning, not a fatwa. Where Muslims differ, the answer says so. Have a question of your own? Write to us.