We catch colds, coughs or the flu when our immunity has been lowered. This can happen following a stressful or busy period where you may not be getting adequate rest or nutrition. Sinusitis or nasal congestion may develop after an infection or in response to environmental factors.
Increasing immunity involves strengthening the whole system. The acupuncture points lie on energy channels that flow deeper within to feed the organs. If the cause of nasal congestion is an energy blockage, it can disappear not long after the block is cleared.