In TCM, post-illness recovery is understood as a state of deficiency with residual pathogenic factors. After a major illness or medical intervention, the body’s Qi, blood, Yin, and Yang may be depleted, while factors such as blood stasis, phlegm, or dampness may remain and hinder recovery.
When Qi and blood are insufficient or circulation is impaired, the body’s ability to repair tissues, restore function, and maintain normal physiological activity is compromised.
Common patterns include:

• Qi deficiency (气虚) – 
General weakness, fatigue, low energy, and slow recovery
• Qi and blood deficiency (气血不足) – Poor nourishment of muscles and organs, leading to weakness, dizziness, and delayed healing
• Spleen deficiency (脾虚) – Impaired digestion and nutrient absorption, contributing to fatigue and poor appetite
• Kidney deficiency (肾虚) – 
Reduced vitality and slower regeneration, especially in long-term or severe conditions
• Blood stasis (血瘀) – Obstruction in circulation, commonly seen in post-stroke or post-surgical conditions, leading to pain, stiffness, or impaired function
• Phlegm or dampness (痰 / 湿) – Residual pathological factors that may affect recovery, particularly in neurological or chronic conditions
• Liver imbalance (肝失疏泄) – Affecting movement, coordination, and emotional regulation, especially in stroke recovery