Does gabapentin cause hair loss?

Hair loss or alopecia is listed as an uncommon possible side effect.

Dermatologic
Common (1% to 10%): Abrasion, facial edema, purpura, rash, pruritus, acne
Uncommon (0.1% to 1%): Alopecia, eczema, dry skin, increased sweating, urticaria, hirsutism, seborrhea, cyst, herpes simplex
Rare (less than 0.1%): Stevens-Johnson syndrome, angioedema, erythema multiforme, drug rash (with eosinophilia and systemic symptoms), herpes zoster, skin discolor, skin papules, photosensitive reaction, psoriasis, desquamation, maceration, skin nodules, subcutaneous nodule, melanosis, skin necrosis, local swelling
Frequency not reported: DRESS/multiorgan hypersensitivity

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