Subarachnoid Hemorrhage (SAH) with Vasospasm: Nimodipine is specifically used to prevent and treat cerebral vasospasm that can occur after a subarachnoid hemorrhage, which can cause recurrent neurologic deficits at different times due to varying areas of the brain being affected by vasospasm.

Migraine with Aura: While not exclusively treated with nimodipine, some forms of migraine with aura can have transient neurological deficits. Nimodipine has been explored for its potential in treating migraine, though it's not a first-line treatment.
Reversible Cerebral Vasoconstriction Syndrome (RCVS): This condition involves temporary narrowing of the blood vessels in the brain and can cause neurological deficits. Nimodipine might be considered in the management due to its vasodilatory effects.

Cerebral Vasculitis: This is an inflammation of the blood vessels in the brain and can cause a wide range of neurological symptoms, including recurrent deficits. Missing this diagnosis could lead to severe consequences, including death or significant disability.
Primary Central Nervous System Vasculitis (PCNSV): Similar to cerebral vasculitis, PCNSV is a rare condition that can cause strokes and various neurological deficits. It requires prompt diagnosis and treatment to prevent serious outcomes.

CADASIL (Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy): A rare hereditary condition that affects the blood vessels in the brain, leading to subcortical strokes and dementia. While nimodipine is not a standard treatment, its use might be considered for symptomatic relief in certain cases.
Moyamoya Disease: A rare condition caused by narrowing or blockage of the internal carotid artery and its branches, leading to transient ischemic attacks or strokes. Treatment typically involves surgery, but nimodipine might be used in some cases to manage symptoms related to vasospasm.