Jumpy (3.5e Flaw)
From D&D Wiki
You nervously and excessively flinch whenever you are touched.
Effect: You never treat touch spells, such as cure light wounds, as harmless: you must always make a saving throw to avoid the effects. If the touch is successful, or if you are touched in a social situation (handshake, pat on the back, kiss...) you are dazed for 1 round.
Roleplaying Ideas: Such a character may have been subjected to stressful combat training and/or be a veteran of a particularly traumatic war or battle. Additionally, it tends to complicate relationships if you violently block your lover's caress and steel yourself for battle.