Answer:
Kidney stones.
Step-by-step explanation:
Kidney stones are stone-like solid structures that are formed with tiny crystals.
Kidney stones are known by many alternative names such as Nephrolithiasis, Renal calculi, Cystine - stones, and more.
The kidney stones are caused by dehydration in the body or lack of drinking enough water. Other causes include a high level of protein, calcium, sugar, salt, or soda in the body.
Therefore, the correct answer is kidney stone.