Polypharmacy, very common in the elderly, and the possibility of drug-drug interactions must be considered as a cause of agitation. Medications such as benzodiazepines, beta-blockers, selective serotonin reuptake inhibitors (SSRIs), neuroleptics and diphenhydramine can cause problems.
Sun Damage. Overexposure is one of the main factors in scalp wrinkles (and wrinkles elsewhere, too). UV radiation speeds the breakdown of elastin and collagen, two things that keep skin tight and firm. As these degenerate, skin begins to sag and wrinkle.
The most common causes of dandruff that people find: 1  Skin irritation: This can be caused by hair products, environmental contaminants and more. 2  Over- or under-washing the scalp: Stripping your scalp of its natural oils can cause an imbalance, leaving the scalp too dry or increasing its production of oil to compensate.