Hydrofluoric Acid (HF)
- Complaints of old age, or of premature old age; in syphilitic mercurial dyscrasia; young people look old.
- Increased ability to exercise without danger (Coca.); is less affected by excessive heat of summer or cold of winter.
- Old cicatrices become red around edges, and threaten to become open ulcers (Caust., Graph.).
- Varicose veins and ulcers, obstinate, long standing cases, in women who have borne many children.
- Caries and necrosis, especially of long bones, psoric or syphilitic, abuse of mercury or silica (Angus.).
- Naevus, flat, of children (r. temple); capillary aneurism (compare, Cal. fl., Tub.).
- Ulcers: red edges and vesicles; decubitus; copious discharge; < from warmth, > from cold; violent pains, like streaks of lightning, confined to a small spot.
- Rapid caries of teeth; fistula dentalis or lachrymalis; exostosis of bone so face (Hekla).
Relations
- Complementary: Coca, Sil.
- Follows well:
- after, Ars. in ascites of drunkards;
- after, Kali c. in hip disease;
- after, Coff., Staph. in sensitive teeth;
- after, Phos. ac. in diabetes;
- after Sil., Symph. in bone diseases;
- after, Spong. in goitre.

