In patients with the adrenogenital syndrome, a single intramuscular injection of 40 mg every two weeks may be adequate. For maintenance of patients with rheumatoid arthritis , the weekly intramuscular dose will vary from 40 to 120 mg. The usual dosage for patients with dermatologic lesions benefited by systemic corticoid therapy is 40 to 120 mg of methylprednisolone acetate administered intramuscularly at weekly intervals for one to four weeks. In acute severe dermatitis due to poison ivy, relief may result within 8 to 12 hours following intramuscular administration of a single dose of 80 to 120 mg. In chronic contact dermatitis, repeated injections at 5 to 10 day intervals may be necessary. In seborrheic dermatitis, a weekly dose of 80 mg may be adequate to control the condition.
Dosage for Kenalog 10 Injection is individualized based on the condition and patient response. Kenalog 10 Injection may interact with aminoglutethimide, birth control pills, hormone replacement therapy, blood thinners, cyclosporine, digoxin, insulin or diabetes medications you take by mouth, isoniazid, rifampin, seizure medication, antibiotics, aspirin, or other NSAIDs (nonsteroidal anti-inflammatory drugs). Tell your doctor all medications you are taking. Kenalog 10 Injection should be used during pregnancy only if prescribed. This medication may be harmful to a fetus. Infants born to mothers who have received corticosteroids during pregnancy should be observed for signs of hypoadrenalism. This medication can pass into breast milk and may harm a nursing baby. Consult your doctor before breastfeeding.
The Nail Psoriasis Severity Index (NAPSI) is a numeric, reproducible, objective, simple tool for evaluation of nail psoriasis.  It evaluates several signs separately, each on a 1–3 scale: pitting, Beau's lines , subungual hyperkeratosis and onycholysis . A 2005 study proposed a modified NAPSI scale for persons with psoriasis and named the title of their publication "Modification of the Nail Psoriasis Severity Index".  Then, in 2007, a study found that there was a high level of inter-rater variability of the 2003 NAPSI scale and proposed another index which was, like the 2005 article, a modification of the 2003 article, and was named modified NAPSI.  A 2008 study found that Cannavo's qualitative system  correlated with NAPSI (P<) and is less time-consuming.