Heth just had two whoppers join our conversation this evening at bedtime. Down the thigh (hadn't seen those for awhile) and long, skinny, owie. Started w/a burning sensation, then a dot matrix that came to full blown streaks about 10" long w/in minutes. Hers do hurt and burn. I use a combo of emu oil and arnica montana cream. Blending them cuts down on the burning that arnica alone may cause; but helps soothe quickly. They settled w/in minutes in terms of what she 'felt'.
Sorry that you are dealing with this, too.