Astanga Hrudaya
रूक्षं किणखरस्पर्शं कण्डूमत् परुषासितम् । सिध्मं रूक्षं बहिः स्निग्धमन्तर्घृष्टं रजः किरेत् ॥ २१ ॥
rough and hard, creating sound on scratching, itching, hard and black.In Sidhma the patches –skin is dry outside and moist inside, gives out small scales when scratched,
english translation
rUkSaM kiNakharasparzaM kaNDUmat paruSAsitam । sidhmaM rUkSaM bahiH snigdhamantarghRSTaM rajaH kiret ॥ 21 ॥
hk transliteration by Sanscript