If at the time of query, the questioner scratches a particular part of the body, then the corresponding part of the vastu purusha will have some affliction or it would have been hurt. There would be defects in the corresponding section of vastupurusha.

If at the time of offering oblations to forty-five deities at the sacrifice, a visible bad omen is observed in a particular direction (Like sneezing, black crow, spitting, cry of a baby etc), or unnatural behavior of the fire (like spark or crackles in a particular direction), then those particular limbs of the vastu-purusha are afflicted with the shalyas. (Like bones, nails, hairs etc).


With Thanks and Regards
Alok Jagawat