Yes...one of the biggest cause. But sometimes due to external factor also.
Body excretes waste through anus, urine, SKIN, lungs and other small openings like ear nose etc...unused digested food are excreted through these organs, so indirectly or directly skin diseases are related with gut. Also what we eat we build same.
Next Steps
consult me as i am an ayurvedic skin and hair specialist
Health Tips
Sweating through exercise, triphala or other laxative for gut cleansing. consult me for deep discussion