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.
Seborrheic dermatitis is a common condition that causes flaking of the skin, most commonly on the scalp as dandruff. It can also appear on the face, chest, arms, legs and groin, causing a greasy and scaly appearance of the skin.