Diminishment from Illness
Scholars have said that if one sees themselves experiencing diminishment from illness in a dream, it may indicate a deficiency in their religious commitment. It has been said that seeing a sick person can be a sign of joy, victory, and acquiring wealth for someone in distress. For the wealthy, it may suggest need, as the ill are needy. If someone intending to travel sees themselves sick, an obstacle may hinder their journey, as sick people are restricted from movement.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam