During which time are intradermal needles typically retained in summer?

In traditional Chinese medicine, intradermal needles are used for various therapeutic purposes, and their retention time can vary with the seasons. During summer, the recommendation is to retain these needles for a shorter duration due to the increased Yang energy and heat associated with the season. Specifically, 1-2 days is considered optimal in summer because this duration helps to align with the body's increased metabolic activity and the nature of external environmental factors, which can be more stimulating and heat-inducing.

Keeping the needles in for too long during this season may lead to unwanted overheating or discomfort in the patient. This approach reflects the principles of seasonality in TCM, where practitioners tailor treatments to harmonize the body's internal environment with the external climate. The other suggested durations, while perhaps suitable for other seasons, do not account for the specific needs and sensitivities during summer.