Deficiency of kidney yin is manifested by soreness and pain in the waist and knees, tinnitus and deafness, dizziness, insomnia and dreaminess, nocturnal emission and premature ejaculation (male), menorrhagia or amenorrhea, metrorrhagia (female), dry throat and mouth, emaciation, hot flashes and night sweats, red cheekbones in the afternoon, red tongue with little fur and rapid pulse.

(Deficiency-heat manifestation)

Deficiency of kidney yang is manifested by soreness and cold pain in the waist and knees, cold limbs, mental fatigue, pale complexion, impotence and premature ejaculation in men, infertility in women due to cold uterus, long and clear urine, pale and fat tongue, white and slippery fur, and slow and weak pulse.

(deficiency-cold manifestation)

I think it's the easiest to remember: the most prominent manifestations of kidney yin deficiency are cheekbone redness in the afternoon, feverish sensation in the fifth, and night sweats at midnight.

The most prominent manifestations of kidney-yang deficiency are cold form, cold limbs, mental fatigue and sluggish pulse.