In titles, subtitles, table headings, and text headings, do not capitalize the second part of a hyphenated compound in the following instances:
▪ If either part is a hyphenated prefix or suffix (see Temporary Compounds in 8.3.1, Punctuation, Hyphens and Dashes, Hyphen)
Nonsteroidal Anti-inflammatory Drugs
Self-referral to Psychiatrists [compound words with the prefix self- are considered one word]
▪ If both parts together constitute a single word (consult the current edition of Merriam-Webster’s Collegiate Dictionary or Stedman's or Dorland's medical dictionary)
Long-term Treatment of Diabetes
Follow-up Studies of Patients With Leukemia
Part-time Nursing Staff
How to Interpret X-ray Films
However, in the case of a temporary compound, in which each part of the hyphenated term carries equal weight, capitalize both words.
Age-Related Macular Degeneration
In titles, subtitles, table heads, text headings, and line art, capitalize the first letter of a word that follows a lowercase (but not a capital) Greek letter (see 17.2, Greek Letters, Capitalization After a Greek Letter), a numeral (except when an abbreviated unit of measure that never is capitalized follows), a symbol, or an italicized organic chemistry prefix such as trans- and cis-.
Systemic Adverse Effects of Ophthalmic β-Blockers
Enhancement of Δ-aminolevulinic Acid Photodynamic Therapy
Effectiveness of Timolol at 10% Strength
High-Dose 308-nm Excimer Laser for the Treatment of Psoriasis
α1-Antitrypsin Inhibits Overexpressed Serine Proteinases During Inflammation
Both genus and species should be capitalized in all-capital text headings.
HELICOBACTER PYLORI AND THE PATIENT WITH ULCERS
Helicobacter pylori and the Patient With Ulcers