Hidrosis in external syndrome:
This condition is usually seen in external asthenia syndrome due to exogenous wind attack, or external heat syndrome due to exogenous wind-heat and diseases due to weakness of weiqi complicated by exogenous wind attack. Wind tends to open and leak, while heat tends to rise and disperse. Attacked by wind and heat, the muscular interstices become loose and sweat excretes. Sweat tends to excrete if weiqi is weak and the muscular interstices are loose. If accompanied by fever, aversion to wind and floating and slow pulse, it is external asthenia syndrome; if accompanied by high fever, light aversion to cold, sore-throat and floating and rapid pulse, it is external heat syndrome.
 
Hidrosis in internal syndrome:
This condition is usually seen in exuberance of endogenous heat syndrome, endogenous heat syndrome due to yin asthenia, weakness of weiqi due to qi asthenia and sudden loss of yangqi.
 
Spontaneous sweating:
Spontaneous sweating refers to constant sweating, especially after physical movement, often seen in qi asthenia syndrome and yang asthenia syndrome. Since asthenia of yangqi fails to protect the superficies, the sweat pores will become loose and body fluid will excrete. That is why sweat is constant. Since physical movement further consumes yangqi, sweating becomes more serious.

Night sweating:
Night sweating refers to sweating occurring when the patient falls asleep but stopping after the patient wakes up. It is usually seen in endogenous heat syndrome due to yin asthenia, or asthenia syndrome of both qi and yin. It is caused by endogenous heat due to yin asthenia. When people fall asleep, yangqi enters into the body, the muscular interstices become loose and asthenic heat steams the body fluid to excrete. That is why sweating occurs during sleep. After people wake up, yangqi returns to the superficies, the muscular interstices become tense. Under this condition, endogenous heat with yin asthenia cannot steam the body fluid to excrete. That is why sweating stops after people wake up. Asthenia of both qi and yin usually lead to both spontaneous sweating and night sweating.
 
Profuse sweating:
Profuse sweating is either asthenic or sthenic. Profuse sweating with high fever, flushed complexion, thirst, preference for cold drinks and full large pulse is seen in sthenic heat syndrome due to exuberance of endogenous heat which drives body fluid to excrete. If profuse sweat occurs in patients with prolonged illness accompanied by symptoms like pale complexion, cold limbs and indistinct pulse, it is yang exhaustion syndrome due to sudden loss of yang which leads body fluid to excrete.
    
Sweating following shivering:
Sweating following shivering is usually seen during the course of exogenous febrile disease, marking the turning point of conflict between healthy qi and pathogenic factors and the development of pathological conditions. If fever abates, pulse calms down and the body turns cool after sweating, it is a sign that pathogenic factors are being expelled；if there are restlessness and rapid pulse after sweating, it is a critical sign of domination of pathogenic factors and decline of healthy qi.