Guide. A parathyroid hormone (PTH) blood test measures the level of parathyroid hormone in the blood. This test is used to help identify hyperparathyroidism, to find the cause of abnormal calcium levels, or to check the status of chronic kidney disease.
Pleva skin disorder. red spots which may develop into blisters or open sores.These will heal on their own in some weeks and recur again also, possibly. Pityriasis lichenoides is the name given to an uncommon rash of unknown cause. Its mild form is known as pityriasis lichenoides chronica (PLC).leva skin disorder. red spots which may develop into blisters or open sores.These will heal on their own in some weeks and recur again also, possibly. Pityriasis lichenoides is the name given to an uncommon rash of unknown cause. Its mild form is known as pityriasis lichenoides chronica (PLC).
Pilonidal (say py-luh-NY-dul) disease is a chronic skin infection in the crease between the buttocks. People with this condition have one or more cysts in that area that tend to get inflamed and infected. A pilonidal cyst may look like a small dimple (called a pit or sinus).ilonidal (say py-luh-NY-dul) disease is a chronic skin infection in the crease between the buttocks. People with this condition have one or more cysts in that area that tend to get inflamed and infected. A pilonidal cyst may look like a small dimple (called a pit or sinus).